Security as the core primitive - Securing AI agents and apps
This week at Microsoft Ignite, we shared our vision for Microsoft security -- In the agentic era, security must be ambient and autonomous, like the AI it protects. It must be woven into and around everything we build—from silicon to OS, to agents, apps, data, platforms, and clouds—and throughout everything we do. In this blog, we are going to dive deeper into many of the new innovations we are introducing this week to secure AI agents and apps. As I spend time with our customers and partners, there are four consistent themes that have emerged as core security challenges to secure AI workloads. These are: preventing agent sprawl and access to resources, protecting against data oversharing and data leaks, defending against new AI threats and vulnerabilities, and adhering to evolving regulations. Addressing these challenges holistically requires a coordinated effort across IT, developers, and security leaders, not just within security teams and to enable this, we are introducing several new innovations: Microsoft Agent 365 for IT, Foundry Control Plane in Microsoft Foundry for developers, and the Security Dashboard for AI for security leaders. In addition, we are releasing several new purpose-built capabilities to protect and govern AI apps and agents across Microsoft Defender, Microsoft Entra, and Microsoft Purview. Observability at every layer of the stack To facilitate the organization-wide effort that it takes to secure and govern AI agents and apps – IT, developers, and security leaders need observability (security, management, and monitoring) at every level. IT teams need to enable the development and deployment of any agent in their environment. To ensure the responsible and secure deployment of agents into an organization, IT needs a unified agent registry, the ability to assign an identity to every agent, manage the agent’s access to data and resources, and manage the agent’s entire lifecycle. In addition, IT needs to be able to assign access to common productivity and collaboration tools, such as email and file storage, and be able to observe their entire agent estate for risks such as over-permissioned agents. Development teams need to build and test agents, apply security and compliance controls by default, and ensure AI models are evaluated for safety guardrails and security vulnerabilities. Post deployment, development teams must observe agents to ensure they are staying on task, accessing applications and data sources appropriately, and operating within their cost and performance expectations. Security & compliance teams must ensure overall security of their AI estate, including their AI infrastructure, platforms, data, apps, and agents. They need comprehensive visibility into all their security risks- including agent sprawl and resource access, data oversharing and leaks, AI threats and vulnerabilities, and complying with global regulations. They want to address these risks by extending their existing security investments that they are already invested in and familiar with, rather than using siloed or bolt-on tools. These teams can be most effective in delivering trustworthy AI to their organizations if security is natively integrated into the tools and platforms that they use every day, and if those tools and platforms share consistent security primitives such as agent identities from Entra; data security and compliance controls from Purview; and security posture, detections, and protections from Defender. With the new capabilities being released today, we are delivering observability at every layer of the AI stack, meeting IT, developers, and security teams where they are in the tools they already use to innovate with confidence. For IT Teams - Introducing Microsoft Agent 365, the control plane for agents, now in preview The best infrastructure for managing your agents is the one you already use to manage your users. With Agent 365, organizations can extend familiar tools and policies to confidently deploy and secure agents, without reinventing the wheel. By using the same trusted Microsoft 365 infrastructure, productivity apps, and protections, organizations can now apply consistent and familiar governance and security controls that are purpose-built to protect against agent-specific threats and risks. gement and governance of agents across organizations Microsoft Agent 365 delivers a unified agent Registry, Access Control, Visualization, Interoperability, and Security capabilities for your organization. These capabilities work together to help organizations manage agents and drive business value. The Registry powered by the Entra provides a complete and unified inventory of all the agents deployed and used in your organization including both Microsoft and third-party agents. Access Control allows you to limit the access privileges of your agents to only the resources that they need and protect their access to resources in real time. Visualization gives organizations the ability to see what matters most and gain insights through a unified dashboard, advanced analytics, and role-based reporting. Interop allows agents to access organizational data through Work IQ for added context, and to integrate with Microsoft 365 apps such as Outlook, Word, and Excel so they can create and collaborate alongside users. Security enables the proactive detection of vulnerabilities and misconfigurations, protects against common attacks such as prompt injections, prevents agents from processing or leaking sensitive data, and gives organizations the ability to audit agent interactions, assess compliance readiness and policy violations, and recommend controls for evolving regulatory requirements. Microsoft Agent 365 also includes the Agent 365 SDK, part of Microsoft Agent Framework, which empowers developers and ISVs to build agents on their own AI stack. The SDK enables agents to automatically inherit Microsoft's security and governance protections, such as identity controls, data security policies, and compliance capabilities, without the need for custom integration. For more details on Agent 365, read the blog here. For Developers - Introducing Microsoft Foundry Control Plane to observe, secure and manage agents, now in preview Developers are moving fast to bring agents into production, but operating them at scale introduces new challenges and responsibilities. Agents can access tools, take actions, and make decisions in real time, which means development teams must ensure that every agent behaves safely, securely, and consistently. Today, developers need to work across multiple disparate tools to get a holistic picture of the cybersecurity and safety risks that their agents may have. Once they understand the risk, they then need a unified and simplified way to monitor and manage their entire agent fleet and apply controls and guardrails as needed. Microsoft Foundry provides a unified platform for developers to build, evaluate and deploy AI apps and agents in a responsible way. Today we are excited to announce that Foundry Control Plane is available in preview. This enables developers to observe, secure, and manage their agent fleets with built-in security, and centralized governance controls. With this unified approach, developers can now identify risks and correlate disparate signals across their models, agents, and tools; enforce consistent policies and quality gates; and continuously monitor task adherence and runtime risks. Foundry Control Plane is deeply integrated with Microsoft’s security portfolio to provide a ‘secure by design’ foundation for developers. With Microsoft Entra, developers can ensure an agent identity (Agent ID) and access controls are built into every agent, mitigating the risk of unmanaged agents and over permissioned resources. With Microsoft Defender built in, developers gain contextualized alerts and posture recommendations for agents directly within the Foundry Control Plane. This integration proactively prevents configuration and access risks, while also defending agents from runtime threats in real time. Microsoft Purview’s native integration into Foundry Control Plane makes it easy to enable data security and compliance for every Foundry-built application or agent. This allows Purview to discover data security and compliance risks and apply policies to prevent user prompts and AI responses from safety and policy violations. In addition, agent interactions can be logged and searched for compliance and legal audits. This integration of the shared security capabilities, including identity and access, data security and compliance, and threat protection and posture ensures that security is not an afterthought; it’s embedded at every stage of the agent lifecycle, enabling you to start secure and stay secure. For more details, read the blog. For Security Teams - Introducing Security Dashboard for AI - unified risk visibility for CISOs and AI risk leaders, coming soon AI proliferation in the enterprise, combined with the emergence of AI governance committees and evolving AI regulations, leaves CISOs and AI risk leaders needing a clear view of their AI risks, such as data leaks, model vulnerabilities, misconfigurations, and unethical agent actions across their entire AI estate, spanning AI platforms, apps, and agents. 90% of security professionals, including CISOs, report that their responsibilities have expanded to include data governance and AI oversight within the past year. 1 At the same time, 86% of risk managers say disconnected data and systems lead to duplicated efforts and gaps in risk coverage. 2 To address these needs, we are excited to introduce the Security Dashboard for AI. This serves as a unified dashboard that aggregates posture and real-time risk signals from Microsoft Defender, Microsoft Entra, and Microsoft Purview. This unified dashboard allows CISOs and AI risk leaders to discover agents and AI apps, track AI posture and drift, and correlate risk signals to investigate and act across their entire AI ecosystem. For example, you can see your full AI inventory and get visibility into a quarantined agent, flagged for high data risk due to oversharing sensitive information in Purview. The dashboard then correlates that signal with identity insights from Entra and threat protection alerts from Defender to provide a complete picture of exposure. From there, you can delegate tasks to the appropriate teams to enforce policies and remediate issues quickly. With the Security Dashboard for AI, CISOs and risk leaders gain a clear, consolidated view of AI risks across agents, apps, and platforms—eliminating fragmented visibility, disconnected posture insights, and governance gaps as AI adoption scales. Best of all, there’s nothing new to buy. If you’re already using Microsoft security products to secure AI, you’re already a Security Dashboard for AI customer. Figure 5: Security Dashboard for AI provides CISOs and AI risk leaders with a unified view of their AI risk by bringing together their AI inventory, AI risk, and security recommendations to strengthen overall posture Together, these innovations deliver observability and security across IT, development, and security teams, powered by Microsoft’s shared security capabilities. With Microsoft Agent 365, IT teams can manage and secure agents alongside users. Foundry Control Plane gives developers unified governance and lifecycle controls for agent fleets. Security Dashboard for AI provides CISOs and AI risk leaders with a consolidated view of AI risks across platforms, apps, and agents. Added innovation to secure and govern your AI workloads In addition to the IT, developer, and security leader-focused innovations outlined above, we continue to accelerate our pace of innovation in Microsoft Entra, Microsoft Purview, and Microsoft Defender to address the most pressing needs for securing and governing your AI workloads. These needs are: Manage agent sprawl and resource access e.g. managing agent identity, access to resources, and permissions lifecycle at scale Prevent data oversharing and leaks e.g. protecting sensitive information shared in prompts, responses, and agent interactions Defend against shadow AI, new threats, and vulnerabilities e.g. managing unsanctioned applications, preventing prompt injection attacks, and detecting AI supply chain vulnerabilities Enable AI governance for regulatory compliance e.g. ensuring AI development, operations, and usage comply with evolving global regulations and frameworks Manage agent sprawl and resource access 76% of business leaders expect employees to manage agents within the next 2–3 years. 3 Widespread adoption of agents is driving the need for visibility and control, which includes the need for a unified registry, agent identities, lifecycle governance, and secure access to resources. Today, Microsoft Entra provides robust identity protection and secure access for applications and users. However, organizations lack a unified way to manage, govern, and protect agents in the same way they manage their users. Organizations need a purpose-built identity and access framework for agents. Introducing Microsoft Entra Agent ID, now in preview Microsoft Entra Agent ID offers enterprise-grade capabilities that enable organizations to prevent agent sprawl and protect agent identities and their access to resources. These new purpose-built capabilities enable organizations to: Register and manage agents: Get a complete inventory of the agent fleet and ensure all new agents are created with an identity built-in and are automatically protected by organization policies to accelerate adoption. Govern agent identities and lifecycle: Keep the agent fleet under control with lifecycle management and IT-defined guardrails for both agents and people who create and manage them. Protect agent access to resources: Reduce risk of breaches, block risky agents, and prevent agent access to malicious resources with conditional access and traffic inspection. Agents built in Microsoft Copilot Studio, Microsoft Foundry, and Security Copilot get an Entra Agent ID built-in at creation. Developers can also adopt Entra Agent ID for agents they build through Microsoft Agent Framework, Microsoft Agent 365 SDK, or Microsoft Entra Agent ID SDK. Read the Microsoft Entra blog to learn more. Prevent data oversharing and leaks Data security is more complex than ever. Information Security Media Group (ISMG) reports that 80% of leaders cite leakage of sensitive data as their top concern. 4 In addition to data security and compliance risks of generative AI (GenAI) apps, agents introduces new data risks such as unsupervised data access, highlighting the need to protect all types of corporate data, whether it is accessed by employees or agents. To mitigate these risks, we are introducing new Microsoft Purview data security and compliance capabilities for Microsoft 365 Copilot and for agents and AI apps built with Copilot Studio and Microsoft Foundry, providing unified protection, visibility, and control for users, AI Apps, and Agents. New Microsoft Purview controls safeguard Microsoft 365 Copilot with real-time protection and bulk remediation of oversharing risks Microsoft Purview and Microsoft 365 Copilot deliver a fully integrated solution for protecting sensitive data in AI workflows. Based on ongoing customer feedback, we’re introducing new capabilities to deliver real-time protection for sensitive data in M365 Copilot and accelerated remediation of oversharing risks: Data risk assessments: Previously, admins could monitor oversharing risks such as SharePoint sites with unprotected sensitive data. Now, they can perform item-level investigations and bulk remediation for overshared files in SharePoint and OneDrive to quickly reduce oversharing exposure. Data Loss Prevention (DLP) for M365 Copilot: DLP previously excluded files with sensitivity labels from Copilot processing. Now in preview, DLP also prevents prompts that include sensitive data from being processed in M365 Copilot, Copilot Chat, and Copilot agents, and prevents Copilot from using sensitive data in prompts for web grounding. Priority cleanup for M365 Copilot assets: Many organizations have org-wide policies to retain or delete data. Priority cleanup, now generally available, lets admins delete assets that are frequently processed by Copilot, such as meeting transcripts and recordings, on an independent schedule from the org-wide policies while maintaining regulatory compliance. On-demand classification for meeting transcripts: Purview can now detect sensitive information in meeting transcripts on-demand. This enables data security admins to apply DLP policies and enforce Priority cleanup based on the sensitive information detected. & bulk remediation Read the full Data Security blog to learn more. Introducing new Microsoft Purview data security capabilities for agents and apps built with Copilot Studio and Microsoft Foundry, now in preview Microsoft Purview now extends the same data security and compliance for users and Copilots to agents and apps. These new capabilities are: Enhanced Data Security Posture Management: A centralized DSPM dashboard that provides observability, risk assessment, and guided remediation across users, AI apps, and agents. Insider Risk Management (IRM) for Agents: Uniquely designed for agents, using dedicated behavioral analytics, Purview dynamically assigns risk levels to agents based on their risky handing of sensitive data and enables admins to apply conditional policies based on that risk level. Sensitive data protection with Azure AI Search: Azure AI Search enables fast, AI-driven retrieval across large document collections, essential for building AI Apps. When apps or agents use Azure AI Search to index or retrieve data, Purview sensitivity labels are preserved in the search index, ensuring that any sensitive information remains protected under the organization’s data security & compliance policies. For more information on preventing data oversharing and data leaks - Learn how Purview protects and governs agents in the Data Security and Compliance for Agents blog. Defend against shadow AI, new threats, and vulnerabilities AI workloads are subject to new AI-specific threats like prompt injections attacks, model poisoning, and data exfiltration of AI generated content. Although security admins and SOC analysts have similar tasks when securing agents, the attack methods and surfaces differ significantly. To help customers defend against these novel attacks, we are introducing new capabilities in Microsoft Defender that deliver end-to-end protection, from security posture management to runtime defense. Introducing Security Posture Management for agents, now in preview As organizations adopt AI agents to automate critical workflows, they become high-value targets and potential points of compromise, creating a critical need to ensure agents are hardened, compliant, and resilient by preventing misconfigurations and safeguarding against adversarial manipulation. Security Posture Management for agents in Microsoft Defender now provides an agent inventory for security teams across Microsoft Foundry and Copilot Studio agents. Here, analysts can assess the overall security posture of an agent, easily implement security recommendations, and identify vulnerabilities such as misconfigurations and excessive permissions, all aligned to the MITRE ATT&CK framework. Additionally, the new agent attack path analysis visualizes how an agent’s weak security posture can create broader organizational risk, so you can quickly limit exposure and prevent lateral movement. Introducing Threat Protection for agents, now in preview Attack techniques and attack surfaces for agents are fundamentally different from other assets in your environment. That’s why Defender is delivering purpose-built protections and detections to help defend against them. Defender is introducing runtime protection for Copilot Studio agents that automatically block prompt injection attacks in real time. In addition, we are announcing agent-specific threat detections for Copilot Studio and Microsoft Foundry agents coming soon. Defender automatically correlates these alerts with Microsoft’s industry-leading threat intelligence and cross-domain security signals to deliver richer, contextualized alerts and security incident views for the SOC analyst. Defender’s risk and threat signals are natively integrated into the new Microsoft Foundry Control Plane, giving development teams full observability and the ability to act directly from within their familiar environment. Finally, security analysts will be able to hunt across all agent telemetry in the Advanced Hunting experience in Defender, and the new Agent 365 SDK extends Defender’s visibility and hunting capabilities to third-party agents, starting with Genspark and Kasisto, giving security teams even more coverage across their AI landscape. To learn more about how you can harden the security posture of your agents and defend against threats, read the Microsoft Defender blog. Enable AI governance for regulatory compliance Global AI regulations like the EU AI Act and NIST AI RMF are evolving rapidly; yet, according to ISMG, 55% of leaders report lacking clarity on current and future AI regulatory requirements. 5 As enterprises adopt AI, they must ensure that their AI innovation aligns with global regulations and standards to avoid costly compliance gaps. Introducing new Microsoft Purview Compliance Manager capabilities to stay ahead of evolving AI regulations, now in preview Today, Purview Compliance Manager provides over 300 pre-built assessments for common industry, regional, and global standards and regulations. However, the pace of change for new AI regulations requires controls to be continuously re-evaluated and updated so that organizations can adapt to ongoing changes in regulations and stay compliant. To address this need, Compliance Manager now includes AI-powered regulatory templates. AI-powered regulatory templates enable real-time ingestion and analysis of global regulatory documents, allowing compliance teams to quickly adapt to changes as they happen. As regulations evolve, the updated regulatory documents can be uploaded to Compliance Manager, and the new requirements are automatically mapped to applicable recommended actions to implement controls across Microsoft Defender, Microsoft Entra, Microsoft Purview, Microsoft 365, and Microsoft Foundry. Automated actions by Compliance Manager further streamline governance, reduce manual workload, and strengthen regulatory accountability. Introducing expanded Microsoft Purview compliance capabilities for agents and AI apps now in preview Microsoft Purview now extends its compliance capabilities across agent-generated interactions, ensuring responsible use and regulatory alignment as AI becomes deeply embedded across business processes. New capabilities include expanded coverage for: Audit: Surface agent interactions, lifecycle events, and data usage with Purview Audit. Unified audit logs across user and agent activities, paired with traceability for every agent using an Entra Agent ID, support investigation, anomaly detection, and regulatory reporting. Communication Compliance: Detect prompts sent to agents and agent-generated responses containing inappropriate, unethical, or risky language, including attempts to manipulate agents into bypassing policies, generating risky content, or producing noncompliant outputs. When issues arise, data security admins get full context, including the prompt, the agent’s output, and relevant metadata, so they can investigate and take corrective action Data Lifecycle Management: Apply retention and deletion policies to agent-generated content and communication flows to automate lifecycle controls and reduce regulatory risk. Read about Microsoft Purview data security for agents to learn more. Finally, we are extending our data security, threat protection, and identity access capabilities to third-party apps and agents via the network. Advancing Microsoft Entra Internet Access Secure Web + AI Gateway - extend runtime protections to the network, now in preview Microsoft Entra Internet Access, part of the Microsoft Entra Suite, has new capabilities to secure access to and usage of GenAI at the network level, marking a transition from Secure Web Gateway to Secure Web and AI Gateway. Enterprises can accelerate GenAI adoption while maintaining compliance and reducing risk, empowering employees to experiment with new AI tools safely. The new capabilities include: Prompt injection protection which blocks malicious prompts in real time by extending Azure AI Prompt Shields to the network layer. Network file filtering which extends Microsoft Purview to inspect files in transit and prevents regulated or confidential data from being uploaded to unsanctioned AI services. Shadow AI Detection that provides visibility into unsanctioned AI applications through Cloud Application Analytics and Defender for Cloud Apps risk scoring, empowering security teams to monitor usage trends, apply Conditional Access, or block high-risk apps instantly. Unsanctioned MCP server blocking prevents access to MCP servers from unauthorized agents. With these controls, you can accelerate GenAI adoption while maintaining compliance and reducing risk, so employees can experiment with new AI tools safely. Read the Microsoft Entra blog to learn more. As AI transforms the enterprise, security must evolve to meet new challenges—spanning agent sprawl, data protection, emerging threats, and regulatory compliance. Our approach is to empower IT, developers, and security leaders with purpose-built innovations like Agent 365, Foundry Control Plane, and the Security Dashboard for AI. These solutions bring observability, governance, and protection to every layer of the AI stack, leveraging familiar tools and integrated controls across Microsoft Defender, Microsoft Entra, and Microsoft Purview. The future of security is ambient, autonomous, and deeply woven into the fabric of how we build, deploy, and govern AI systems. Explore additional resources Learn more about Security for AI solutions on our webpage Learn more about Microsoft Agent 365 Learn more about Microsoft Entra Agent ID Get started with Microsoft 365 Copilot Get started with Microsoft Copilot Studio Get started with Microsoft Foundry Get started with Microsoft Defender for Cloud Get started with Microsoft Entra Get started with Microsoft Purview Get started with Microsoft Purview Compliance Manager Sign up for a free Microsoft 365 E5 Security Trial and Microsoft Purview Trial 1 Bedrock Security, 2025 Data Security Confidence Index, published Mar 17, 2025. 2 AuditBoard & Ascend2, Connected Risk Report 2024; as cited by MIT Sloan Management Review, Spring 2025. 3 KPMG AI Quarterly Pulse Survey | Q3 2025. September 2025. n= 130 U.S.-based C-suite and business leaders representing organizations with annual revenue of $1 billion or more 4 First Annual Generative AI study: Business Rewards vs. Security Risks, , Q3 2023, ISMG, N=400 5 First Annual Generative AI study: Business Rewards vs. Security Risks, Q3 2023, ISMG, N=400Search and Purge workflow in the new modern eDiscovery experience
With the retirement of Content Search (Classic) and eDiscovery Standard (Classic) in May, and alongside the future retirement of eDiscovery Premium (Classic) in August, organizations may be wondering how this will impact their existing search and purge workflow. The good news is that it will not impact your organizations ability to search for and purge email, Teams and M365 Copilot messages; however there are some additional points to be careful about when working with purge with cmdlet and Graph alongside of the modern eDiscovery experience. We have made some recent updates to our documentation regarding this topic to reflect the changes in the new modern eDiscovery experience. These can be found below and you should ensure that you read them in full as they are packed with important information on the process. Find and delete email messages in eDiscovery | Microsoft Learn Find and delete Microsoft Teams chat messages in eDiscovery | Microsoft Learn Search for and delete Copilot data in eDiscovery | Microsoft Learn The intention of this first blog post in the series is to cover the high-level points including some best practices when it comes to running search and purge operations using Microsoft Purview eDiscovery. Please stay tuned for further blog posts intended to provide more detailed step-by-step of the following search and purge scenarios: Search and Purge email and Teams messages using Microsoft Graph eDiscovery APIs Search and Purge email messages using the Security and Compliance PowerShell cmdlets I will update this blog post with the subsequent links to the follow-on posts in this series. So let’s start by looking at the two methods available to issue a purge command with Microsoft Purview eDiscovery, they are the Microsoft Graph eDiscovery APIs or the Security and Compliance PowerShell cmdlets. What licenses you have dictates which options are available to you and what type of items you can be purge from Microsoft 365 workloads. For E3/G3 customers and cases which have the premium features disabled You can only use the PowerShell cmdlets to issue the purge command You should only purge email items from mailboxes and not Teams messages You are limited to deleting 10 items per location with a purge command For E5/G5 customers and cases which have the premium features enabled You can only use the Graph API to issue the purge command You can purge email items and Teams messages You can delete up to 100 items per location with a purge command To undertake a search and then purge you must have the correct permissions assigned to your account. There are two key Purview Roles that you must be assigned, they are: Compliance Search: This role lets users run the Content Search tool in the Microsoft Purview portal to search mailboxes and public folders, SharePoint Online sites, OneDrive for Business sites, Skype for Business conversations, Microsoft 365 groups, and Microsoft Teams, and Viva Engage groups. This role allows a user to get an estimate of the search results and create export reports, but other roles are needed to initiate content search actions such as previewing, exporting, or deleting search results. Search and Purge: This role lets users perform bulk removal of data matching the criteria of a search. To learn more about permissions in eDiscovery, along with the different eDiscovery Purview Roles, please refer to the following Microsoft Learn article: Assign permissions in eDiscovery | Microsoft Learn By default, eDiscovery Manager and eDiscovery Administrators have the “Compliance Search” role assigned. For search and purge, only the Organization Management Purview Role group has the role assigned by default. However, this is a highly privileged Purview Role group and customers should considering using a custom role group to assign the Search and Purge Purview role to authorised administrators. Details on how to create a custom role group in Purview can be found in the following article. Permissions in the Microsoft Purview portal | Microsoft Learn It is also important to consider the impact of any retention policies or legal holds will have when attempting to purge email items from a mailbox where you want to hard delete the items and remove it completely from the mailbox. When a retention policy or legal hold is applied to a mailbox, email items that are hard deleted via the purge process are moved and retained in the Recoverable Items folder of the mailbox. There purged items will be retained until such time as all holds are lifted and until the retention period defined in the retention policy has expired. It is important to note that items retained in the Recoverable Items folder are not visible to users but are returned in eDiscovery searches. For some search and purge use cases this is not a concern; if the primary goal is to remove the item from the user’s view then additional steps are required. However if the goal is to completely remove the email item from the mailbox in Exchange Online so it doesn't appear in the user’s view and is not returned by future eDiscovery searches then additional steps are required. They are: Disable client access to the mailbox Modify retention settings on the mailbox Disable the Exchange Online Managed Folder Assistant for the mailbox Remove all legal holds and retention policies from the mailbox Perform the search and purge operation Revert the mailbox to its previous state These steps should be carefully followed as any mistake could result in additional data that is being retained being permanently deleted from the service. The full detailed steps can be found in the following article. Delete items in the Recoverable Items folder mailboxes on hold in eDiscovery | Microsoft Learn Now for some best practice when running search and purge operations: Where possible target the specific locations containing the items you wish to purge and avoid tenant wide searches where possible If a tenant wide search is used to initially locate the items, once the locations containing the items are known modify the search to target the specific locations and rerun the steps Always validate the item report against the statistics prior to issuing the purge command to ensure you are only purging items you intend to remove If the item counts do not align then do not proceed with the purge command Ensure admins undertaking search and purge operations are appropriately trained and equipped with up-to-date guidance/process on how to safely execute the purge process The search conditions Identifier, Sensitivity Label and Sensitive Information Type do not support purge operations and if used can cause un-intended results Organizations with E5/G5 licenses should also take this opportunity to review if other Microsoft Purview and Defender offerings can help them achieve the same outcomes. When considering the right approach/tool to meet your desired outcomes you should become familiar with the following additional options for removing email items: Priority Clean-up (link): Use the Priority cleanup feature under Data Lifecycle Management in Microsoft Purview when you need to expedite the permanent deletion of sensitive content from Exchange mailboxes, overriding any existing retention settings or eDiscovery holds. This process might be implemented for security or privacy in response to an incident, or for compliance with regulatory requirements. Threat Explorer (link): Threat Explorer in Microsoft Defender for Office 365 is a powerful tool that enables security teams to investigate and remediate malicious emails in near real-time. It allows users to search for and filter email messages based on various criteria - such as sender, recipient, subject, or threat type - and take direct actions like soft delete, hard delete, or moving messages to junk or deleted folders. For manual remediation, Threat Explorer supports actions on emails delivered within the past 30 days In my next posts I will be delving further into how to use both the Graph APIs and the Security and Compliance PowerShell module to safely execute your purge commands.Search and Purge using the Security and Compliance PowerShell cmdlets
Welcome back to the series of blogs covering search and purge in Microsoft Purview eDiscovery! If you are new to this series, please first visit the blog post in our series that you can find here: Search and Purge workflow in the new modern eDiscovery experience. Also please ensure you read in full the Microsoft Learn documentation on this topic as I will not be covering some of the steps in full (permissions, releasing holds, all limitations): Find and delete email messages in eDiscovery | Microsoft Learn So as a reminder, E3/G3 customers must use the Security and Compliance PowerShell cmdlets to execute the purge operation. Searches can continue to be created using the New-ComplianceSearch cmdlet and then run the newly created search using the Start-ComplianceSearch cmdlet. Once a search has run, the statistics can be reviewed before executing the New-ComplianceSearchAction cmdlet with the Purge switch to remove the item from the targeted locations. However, some organizations may want to initially run the search, review statistics and export an item report in the new user experience before using the New-ComplianceSearchAction cmdlet to purge the items from the mailbox. Before starting, ensure you have version 3.9.0 or later of the Exchange Online Management PowerShell Module installed (link). If multiple versions of the Exchange Online Management PowerShell module are installed alongside version 3.9.0, remove the older versions of the module to avoid potential conflicts between the different versions of the module. When connecting using the Connect-IPPSession cmdlet ensure you include the EnableSearchOnlySession parameter otherwise the purge command will not run and may generate an error (link) Create the case, if you will be using the new Content Search case you can skip this step. However, if you want to create a new case to host the search, you must create the case via PowerShell. This ensures any searches created within the case in the Purview portal will support the PowerShell based purge command. Use the Connect-IPPSession command to connect to Security and Compliance PowerShell before running the following command to create a new case. New-ComplianceCase “Test Case” Select the new Purview Content Search case or the new case you created in step 1 and create a new Search Within your new search use the Add Sources option to search for and select the mailboxes containing the item to be purged by adding them to the Data sources of your newly created search. Note: Make sure only Exchange mailboxes are selected as you can only purge items contained within Exchange Mailboxes. If you added both the mailbox and associated sites, you can remove the sites using the 3 dot menu next to the data source under User Options. Alternatively, use the manage sources button to remove the sites associated with the data source. Within Condition builder define the conditions required to target the item you wish to purge. In this example, I am targeting an email with a specific subject, from a specific sender, on a specific day. To help me understand the estimated number of items that would be returned by the search I can run a statistics job first to give me confidence that the query is correct. I do this by selecting Run Query from the search itself. Then I can select Statistics and Run Query to trigger the Statistics job. Note, you can view the progress of the job via the Process Manager Once completed I can view the Statistics to confirm the query looks accurate and returning the numbers I was expecting. If I want to further verify that the items returned by the search is what I am looking for, I can run a Sample job to review a sample of the items matching the search query Once the Sample job is completed, I can review samples for locations with hits to determine if this is indeed the items I want to purge. If I need to go further and generate a report of the items that match the search (not just statistics and sampling) I can run an export to generate a report for the items that match the search criteria. Note: It is important to run the export report to review the results that purge action will remove from the mailbox. This will ensure that we purge only the items of interest. Download the report for the export job via the Process Manager or the Export tab to review the items that were a match Note: If very few locations have hits it is recommended to reduce the scope of your search by updating the data sources to include only the locations with hits. Switch back to the cmdlet and use Get-ComplianceSearch cmdlet as below, ensure the query is as you specified in the Purview Portal Get-ComplianceSearch -Identity "My search and purge" | fl As the search hasn’t be run yet in PowerShell – the Items count is 0 and the JobEndTime is not set - the search needs to be re-run via PS as per the example shown below Start-ComplianceSearch "My search and purge" Give it a few minutes to complete and use Get-ComplianceSearch to check the status of the search, if the status is not “Completed” and JobEndTime is not set you may need to give it more time Check the search returned the same results once it has finished running Get-ComplianceSearch -Identity "My search and purge" | fl name,status,searchtype,items,searchstatistics CRITICAL: It is important to make sure the Items count match the number of items returned in the item report generated from the Purview Portal. If the number of items returned in PowerShell do not match, then do not continue with the purge action. Issue the purge command using the New-ComplianceSearchAction cmdlet New-ComplianceSearchAction -SearchName "My search and purge" -Purge -PurgeType HardDelete Once completed check the status of the purge command to confirm that the items have been deleted Get-ComplianceSearchAction "My search and purge_purge" | fl Now that the purge operation has been completed successfully, it has been removed from the target mailbox and is no longer accessible by the user.Empowering organizations with integrated data security: What’s new in Microsoft Purview
Today, data moves across clouds, apps, and devices at an unprecedented speed, often outside the visibility of siloed legacy tools. The rise of autonomous agents, generative AI, and distributed data ecosystems means that traditional perimeter-based security models are no longer sufficient. Even though companies are spending more than $213 billion globally, they still face several persistent security challenges: Fragmented tools don’t integrate together well and leave customers lacking full visibility of their data security risks The growing use of AI in the workplace is creating new data risks for companies to manage The shortage of skilled cybersecurity professionals is making it difficult to accomplish data security objectives Microsoft is a global leader in cloud, productivity, and security solutions. Microsoft Purview benefits from this breadth of offerings, integrating seamlessly across Microsoft 365, Azure, Microsoft Fabric, and other Microsoft platforms — while also working in harmony with complementary security tools. Unlike fragmented point solutions, Purview delivers an end-to-end data security platform built into the productivity and collaboration tools organizations already rely on. This deep understanding of data within Microsoft environments, combined with continually improving external data risk detections, allows customers to simplify their security stack, increase visibility, and act on data risks more quickly. At Ignite, we’re introducing the next generation of data security — delivering advanced protection and operational efficiency, so security teams can move at business speed while maintaining control of their data. Go beyond visibility into action, across your data estate Many customers today lack a comprehensive view of how to holistically address data security risks and properly manage their data security posture. To help customers strengthen data security across their data estate, we are excited to announce the new, enhanced Microsoft Purview Data Security Posture Management (DSPM). This new AI-powered DSPM experience unifies current Purview DSPM and DSPM for AI capabilities to create a central entry point for data security insights and controls, from which organizations can take action to continually improve their data security posture and prioritize risks. The new capabilities in the enhanced DSPM experience are: Outcome-Based workflows: Choose a data security objective and see related metrics, risk patterns, a recommended action plan and its impact - going from insight to action. Expanded coverage and remediation on Data Risk Assessments: Conduct item-level analysis with new remediation actions like bulk disabling of overshared SharePoint links. Out-of-box posture reports: Uncover data protection gaps and track security posture improvements with out-of-box reports that provide rich context on label usage, auto-labeling effectiveness, posture drift through label transitions, and DLP policy activities. AI Observability: Surface an organization’s agent inventory with assigned agent risk level and agent posture metrics based on agentic interactions with the organization’s data. New Security Copilot Agent: Accelerate the discovery and analysis of sensitive data to uncover hidden risks across files, emails, and messages. Gain visibility of non-Microsoft data within your data estate: Enable a unified view of data risks by gaining visibility into Salesforce, Snowflake, Google Cloud Platform, and Databricks – available through integrations with external partners via Microsoft Sentinel. These DSPM enhancements will be available in Public Preview within the upcoming weeks. Learn more in our blog dedicated to the announcement of the new Microsoft Purview DSPM. Together, these innovations reflect a larger shift: data security is no longer about silos—it’s about unified visibility and control everywhere data lives and having a comprehensive understanding of the data estate to detect and prevent data risks. Organizations trust Microsoft for their productivity and security platforms, but their footprint spans across third-party data environments too. That’s why Purview continues to expand protection beyond Microsoft environments. In addition to bringing in 3rd party data into DSPM, we are also expanding auto-labeling to three new Data Map sources, adding to the data sources we previously announced. Currently in public preview, the new sources include Snowflake, SQL Server, and Amazon S3. Once connected to Purview, admins gain an “at-a-glance” view of all data sources and can automatically apply sensitivity labels, enforcing consistent security policies without manual effort. This helps organizations discover sensitive information at scale, reduce the risk of data exposure, and ensure safer AI adoption all while simplifying governance through centralized policy management and visibility across their entire data estate. Enable AI adoption and prevent data oversharing As organizations adopt more autonomous agents, new risks emerge, such as unsupervised data access and creation, cascading agent interactions, and unclear data activity accountability. Besides AI Observability in DSPM providing details on the inventory and risk level of the agents, Purview is expanding its industry-leading data security and compliance capabilities to secure and govern agents that inherit users’ policies and controls, as well as agents that have their own unique IDs, policies, and controls. This includes agent types across Microsoft 365 Copilot, Copilot Studio, Microsoft Foundry, and third-party platforms. Key enhancements include: Extension of Purview Information Protection and Data Loss Prevention policies to autonomous agents: Scope autonomous agents with an Agent ID into Purview policies that work for users across Microsoft 365 apps, including Exchange, SharePoint, and Teams. Microsoft Purview Insider Risk Management for Agents: With dedicated indicators and behavioral analytics to flag specific risky agent activities, enable proactive investigation by assigning risk levels to each agent. Extension of Purview data compliance capabilities to agent interactions: Microsoft Purview Communication Compliance, Data Lifecycle Management, Audit, and eDiscovery extend to agent interactions, supporting responsible use, secure retention, and agentic accountability. Purview SDK embedded in Agent Framework SDK: Purview SDK embedded in Agent Framework SDK enables developers to integrate enterprise-grade security, compliance, and governance into AI agents. It delivers automatic data classification, prevents sensitive data leaks and oversharing, and provides visibility and control for regulatory compliance, empowering secure adoption of AI agents in complex environments. Purview integration with Foundry: Purview is now enabled within Foundry, allowing Foundry admins to activate Microsoft Purview on their subscription. Once enabled, interaction data from all apps and agents flows into Purview for centralized compliance, governance, and posture management of AI data. Azure AI Search honors Purview labels and policies: Azure AI Search now ingests Microsoft Purview sensitivity labels and enforces corresponding protection policies through built-in indexers (SharePoint, OneLake, Azure Blob, ADLS Gen2). This ensures secure, policy-aligned search over enterprise data, enabling agentic RAG scenarios where only authorized documents are returned or sent to LLMs, preventing oversharing and aligning with enterprise data protection standards. Extension of Purview Data Loss Prevention policies to Copilot Mode in Edge for Business: This week, Microsoft Edge for Business introduced Copilot Mode, transforming the browser into a proactive, agentic partner. This is AI-assisted browsing will honor the user’s existing DLP protections, such as endpoint DLP policies that prevent pasting to sensitive service domains, or summarizing sensitive page content. Learn more in our blog dedicated to the announcements of Microsoft Purview for Agents. New capabilities in Microsoft Purview, now in public preview, to help prevent data oversharing and leakage through AI include: Expansion of Microsoft Purview Data Loss Prevention (DLP) for Microsoft 365 Copilot: Previously, we introduced DLP for Microsoft 365 Copilot to prevent labeled files & emails from being used as grounding data for responses, therefore reducing the risk of oversharing. Today, we are expanding DLP for Microsoft 365 Copilot to safeguard prompts containing sensitive data. This real-time control helps organizations mitigate data leakage and oversharing risks by preventing Microsoft 365 Copilot, Copilot Chat, and Microsoft 365 Copilot agents from returning a response when prompts contain sensitive data or using that sensitive data for grounding in Microsoft 365 or the web. For example, if a user searches, “Can you tell me more about my customer based on their address: 1234 Main Street,” Copilot will both inform the user that organizational policies prevent it from responding to their prompt, as well as block any web queries to Bing for “1234 Main Street.” Enhancements to inline data protection in Edge for Business: Earlier this year, we introduced inline data protection in Edge for Business to prevent sensitive data from being leaked to unmanaged consumer AI apps, starting with ChatGPT, Google Gemini, and DeepSeek. We are not only making this capability generally available for the initial set of AI apps, but also expanding the capability to 30+ new apps in public preview and supporting file upload activity in addition to text. This addresses potential data leakage that can occur when employees send organizational files or data to consumer AI apps for help with work-related tasks, such as document creation or code reviews. Inline data protection for the network: For user activity outside of the browser, we are also enabling inline data protection at the network layer. Earlier this year, we introduced integrations with supported secure service edge (SSE) providers to detect when sensitive data is shared to unmanaged cloud locations, such as consumer AI apps or personal cloud storage, even if sharing occurs outside of the Edge browser. In addition to the discovery of sensitive data, these integrations now support protection controls that block sensitive data from leaving a user device and reaching an unmanaged cloud service or application. These capabilities are now generally available through the Netskope and iboss integrations, and inline data discovery is available in public preview through the Palo Alto Networks integration. Extension of Purview protection to on-device AI: Purview DLP policies now extend to the Recall experience in Copilot+ PC devices to prevent sensitive organizational data from being undesirably captured and retained. Admins can now block Recall snapshots based on sensitivity label or the presence of Purview sensitive information types (SITs) in a document open on the device, or simply honor and display the sensitivity labels of content captured in the Recall snapshot library. For example, a DLP policy can be configured to prevent recall from taking snapshots of any documents labeled “Highly Confidential,” or a product design file that contains intellectual property. Learn more in the Windows IT Pro blog. Best-in-class data security for Microsoft environments Microsoft Purview sets the standard for data security within its own ecosystem. Organizations benefit from unified security policies and seamless compliance controls that are purpose-built for Microsoft environments, ensuring sensitive data remains secure without compromising productivity. We also are constantly investing in expanding protections and controls to Microsoft collaboration tools including SharePoint, Teams, Fabric, Azure and across Microsoft 365. On-demand classification adds meeting transcript coverage and new enhancements: To help organizations protect sensitive data sitting in data-at-rest, on-demand classification now extends to meeting transcripts, enabling the discovery and classification of sensitive information shared in existing recorded meeting transcripts. Once classified, admins can set up DLP or Data Lifecycle Management (DLM) policies to properly protect and retain this data according to organizational policies. This is now generally available, empowering organizations to strengthen data security, streamline compliance, and ensure even sensitive information in data-at-rest is discovered, protected, and governed more effectively. In addition, on-demand classification for endpoints is also generally available, giving organizations even broader coverage across their data estate. New usage posture and consumption reports: We’re introducing new usage posture and consumption reports, now in public preview. Admins can quickly identify compliance gaps, optimize Purview seat assignments, and understand how consumptive features are driving spend. With granular insights by feature, policy, and user type, admins can analyze usage trends, forecast costs, and toggle consumptive features on and off directly, all from a unified dashboard. The result: stronger compliance, easier cost management, and better alignment of Purview investments to your organization’s needs. Enable DLP and Copilot protection with extended SharePoint permissions: Extended SharePoint permissions, now generally available, make it simple to protect and manage files in SharePoint by allowing library owners to apply a default sensitivity label to an entire document library. When this is enabled, the label is dynamically enforced across all unprotected files in the library, both new and existing, within the library. Downloaded files are automatically encrypted, and access is managed based on SharePoint site membership, giving organizations powerful, scalable access control. With extended SharePoint permissions, teams can consistently apply labels at scale, automate DLP policy enforcement, and confidently deploy Copilot, all without the need for manually labeling files. Whether for internal teams, external partners, or any group where permissions need to be tightly controlled, extended SharePoint permissions streamline protection and compliance in SharePoint. Network file filtering via Entra GSA integration: We are integrating Purview with Microsoft Entra to enable file filtering at the network layer. These filtering controls help prevent sensitive content from being shared to unauthorized services based on properties such as sensitivity labels or presence of Purview sensitive information types (SITs) within the file. For example, Entra admins can now create a file policy to block files containing credit card numbers from passing through the network. Learn more here. Expanded protection scenarios enabled by Purview endpoint DLP: We are introducing several noteworthy enhancements to Purview endpoint DLP to protect an even broader range of exfiltration or leakage scenarios from organizational devices, without hindering user productivity. These enhancements, initially available on Windows devices, include: Extending protection to unsaved files: Files no longer need to be saved to disk to be protected under a DLP policy. With this improvement, unsaved files will undergo a point-in-time evaluation to detect the presence of sensitive data and apply the appropriate protections. Expanded support for removable media: Admins can now prevent data exfiltration to broader list of removable media devices, including iPhones, Android devices, and CD-ROMs. Protection for Outlook attachments downloaded to removable media or network shares: Admins can now prevent exfiltration of email attachments when users attempt to drag and drop them into USB devices, network shares, and other removable media. Expanded capability support for macOS: In addition to the new endpoint DLP protections introduced above, we are also expanding the following capabilities, already available for Windows devices, to devices running on macOS: Expanded file type coverage to 110+ file types, blanket protections for non-Office or PDF file types, addition of “allow” and “off” policy actions, device-based policy scoping to scope policies to specific devices or device groups (or apply exclusions), and integration with Power Automate. Manageability and alert investigation improvements in Purview DLP: Lastly, we are also introducing device manageability and alert investigation improvements in Purview DLP to simplify the day-to-day experience for admins. These improvements include: Reporting and troubleshooting improvements for devices onboarded to endpoint DLP: We are introducing additional tools for admins to build confidence in their Purview DLP protections for endpoint devices. These enhancements, designed to maximize reliability and enable better troubleshooting of potential issues, include near real-time reporting of policy syncs initiated on devices and policy health insights into devices’ compliance status and readiness to receive policies. Enhancements to always-on diagnostics: Earlier this year, we introduced always-on diagnostics to automatically collect logs from Windows endpoint devices, eliminating the need to reproduce issues when submitting an investigation request or raising a support ticket. This capability is expanding so that admins now have on-demand access to diagnostic logs from users’ devices without intervening in their operations. This further streamlines the issue resolution process for DLP admins while minimizing end user disruption. Simplified DLP alert investigation, including easier navigation to crucial alert details in just 1 click, and the ability to aggregate alerts originating from a single user for more streamlined investigation and response. For organizations who manage Purview DLP alerts within their broader incident management process in Microsoft Defender, we are pleased to share that alert severities will now be synced between the Purview portal and the Defender portal. Expanding enterprise-grade data security to small and medium businesses (SMBs): Purview is extending its reach beyond large enterprises by introducing a new add-on for Microsoft 365 Business Premium, bringing advanced data security and compliance capabilities to SMBs. The Microsoft Purview suite for Business Premium brings the same enterprise-grade protection, such as sensitivity labeling, data loss prevention, and compliance management, to organizations with up to 300 users. This enables SMBs to operate with the same level of compliance and data security as large enterprises, all within a simplified, cost-effective experience built for smaller teams. Stepping into the new era of technology with AI-powered data security Globally, there is a shortage of skilled cybersecurity professionals. Simultaneously, the volume of alerts and incidents is ever growing. By infusing AI into data security solutions, admins can scale their impact. By reducing manual workloads, they enhance operational effectiveness and strengthen overall security posture – allowing defenders to stay ahead. In 2025, 82% of organizations have developed plans to use GenAI to fortify their data security programs. With its cutting-edge generative AI-powered investigative capabilities, Microsoft Purview Data Security Investigations (DSI) is transforming and scaling how data security admins analyze incident-related data. Since being released into public preview in April, the product has made a big impact with customers like Toyota Motors North America. "Data Security Investigations eliminates manual work, automating investigations in minutes. It’s designed to handle the scale and complexity of large data sets by correlating user activity with data movement, giving analysts a faster, more efficient path to meaningful insights,” said solution architect Dan Garawecki. This Ignite, we are introducing several new capabilities in DSI, including: DSI integration with DSPM: View proactive, summary insights and launch a Data Security Investigation directly from DSPM. This integration brings the full power of DSI analysis to your fingertips, enabling admins to drill into data risks surfaced in DSPM with speed and precision. Enhancements in DSI AI-powered deep content analysis capabilities: Admins can now add context before AI analysis for higher-quality, more efficient investigations. A new AI-powered natural language search function lets admins locate specific files using keywords, metadata, and embeddings. Vector search and content categorization enhancements allow admins to better identify risky assets. Together, these enhancements equip admins with sharper, faster tools for identifying buried data risks – both proactively and reactively. DSI cost transparency report and in-product estimator: To help customers manage pay-as-you-go billing, DSI is adding a new lightweight in-product cost estimator and transparency report. We are also expanding Security Copilot in Microsoft Purview with AI-powered capabilities that strengthen both the protection and investigation of sensitive data by introducing the Data Security Posture Agent and Data Security Triage Agent. Data Security Posture Agent: Available in preview, the new Data Security Posture Agent uses LLMs to help admins answer “Is this happening?” across thousands of files—delivering fast, intent-driven discovery and risk profiling, even when explicit keywords are absent. Integrated with Purview DSPM, it surfaces actionable insights and improves compliance, helping teams reduce risk and respond to threats before they escalate. Data Security Triage Agent: Alongside this, the Data Security Triage Agent, now generally available, enables analysts to efficiently triage and remediate the most critical alerts, automating incident response and surfacing the threats that matter most. Together, these agentic capabilities convert high-volume signals into consistent, closed-loop action, accelerate investigations and remediation, reduce policy-violation dwell time, and improve audit readiness, all natively integrated within Microsoft 365 and Purview so security teams can scale outcomes without scaling headcount. To make the agents easily accessible and help teams get started more quickly, we are excited to announce that Security Copilot will be available to all Microsoft 365 E5 customers. Rollout starts today for existing Security Copilot customers with Microsoft 365 E5 and will continue in the upcoming months for all Microsoft 365 E5 customers. Customers will receive advanced notice before activation. Learn more: https://aka.ms/SCP-Ignite25 Data security that keeps innovating alongside you As we look ahead, Microsoft Purview remains focused on empowering organizations with scalable solutions that address the evolving challenges of data security. While we deliver best-in-class security for Microsoft, we recognize that today’s organizations rarely operate in a single cloud, many businesses rely on a diverse mix of platforms to power their operations and innovation. That’s why we have been extending Purview’s capabilities beyond Microsoft environments, helping customers protect data across their entire digital estate. In a world where data is the lifeblood of innovation, securing it must be more than a checkbox—it must be a catalyst for progress. As organizations embrace AI, autonomous agents, and increasingly complex digital ecosystems, Microsoft Purview empowers them to move forward with confidence. By unifying visibility, governance, and protection across the entire data estate, Purview transforms security from a fragmented challenge into a strategic advantage. The future of data security isn’t just about defense—it’s about enabling bold, responsible innovation at scale. Let’s build that future together.Teams Private Channels: Group-Based Compliance Model & Purview eDiscovery Considerations
Microsoft Teams Private Channels are undergoing an architectural change that will affect how your organisations uses Microsoft Purview eDiscovery to hold and discovery these messages going forward. In essence, copies of private channel messages will now be stored in the M365 Group mailbox, aligning their storage with how standard and shared channels work today. This shift, due to roll out from early October 2025 to December 2025, brings new benefits (like greatly expanded channel limits and meeting support) and has the potential to impact your Purview eDiscovery searches and legal holds workflows. In this blog post, we’ll break down what’s changing, what remains the same, and provide you with the information you need to review your own eDiscovery processes when working with private channel messages. What’s Changing? Private channel conversation history is moving to a group-based model. Historically, when users posted in a private channel, copies of those messages were stored in each member of the private channel’s Exchange Online mailbox (in a hidden folder). This meant that Microsoft Purview eDiscovery search and hold actions for private channel content had to be scoped to the member’s mailbox, which added complexity. Under the new model rolling out in late 2025, each private channel will get its own dedicated channel mailbox linked to the parent Teams’ M365 group mailbox. In other words, private channel messages will be stored similarly to shared channel messages; where the parent Teams’ M365 group mailbox is targeted in eDiscovery searches and holds, instead of targeting the mailboxes of all members of the private channel. Targeting the parent Teams’ M365 Group mailbox in a search or a hold will extend to all dedicated channel mailboxes for shared and private channels within the team as well as including any standard channels. After the transition, any new messages in a private channel will see the message copy being stored in the channel’s group mailbox, not in users’ mailboxes. Why the change? This aligns the retention and collection of private channel messages to standard and shared channel messages. Instead of having to include separate data sources depending on the type of Teams channel, eDiscovery practitioners can simply target the Team’s M365 Group mailbox and cover all its channel, no matter it’s type. This update will introduce major improvements to private channels themselves. This includes raising the limits on private channels and members, and enabling features that were previously missing: Maximum private channels per team: increasing from 30 to 1000. Maximum members in a private channel: increasing from 250 to 5000. Meeting scheduling in private channels: previously not supported, now allowed under the new model. The table below summarizes the old vs new model for Teams private channel messages: Aspect Before (User Mailbox Model) After (Group Mailbox Model) Message Storage Messages copied into each private channel member’s Exchange Online mailbox. Messages are stored in a channel mailbox associated with the parent Teams’ M365 group mailbox. eDiscovery Search Had to search private channel member’s mailboxes to find channel messages. Search the parent M365 group mailbox for new private channel messages and user mailboxes for any messages that were not migrated to the group mailbox. Legal Hold Placement Apply hold on private channel member’s mailbox to preserve messages. Apply hold on the parent M365 group mailbox. Existing holds may need to include both the M365 group mailbox and members mailboxes to cover new messages and messages that were not migrated to the group mailbox. Things to know about the changes During the migration of Teams private channel messages to the new group-based model, the process will transfer the latest version of each message from the private channel member’s mailbox to the private channel’s dedicated channel mailbox. However, it’s important to note that this process does not include the migration of held message versions; specifically, any messages that were edited or deleted prior to the migration. These held messages, due to a legal hold or retention policy, will remain in the individual user mailboxes where they were originally stored. As such, eDiscovery practitioners should consider, based on their need, including the user mailboxes in their search and hold scopes. Legal Holds for Private Channel Content Before the migration, if you needed to preserve a private channel’s messages, you placed a hold on the mailboxes of each member of the private channel. This ensured each user’s copy of the channel messages was held by the hold. Often, eDiscovery practitioners would also place a hold on the M365 group mailbox to also hold the messages from standard and shared channels After the migration, this workflow changes: you will instead place a hold on the parent Team’s M365 group mailbox that corresponds to the private channel. Before migration: It is recommended to update any existing hold that are intended to preserve private channel messages so that it includes the parent Team’s M365 group mailbox in addition to the private channel members’ mailboxes. This ensures continuity as any new messages (once the channel migrates) will be stored in the group mailbox. After migration: For any new eDiscovery hold involving a private channel, simply add the parent Teams’ M365 group mailbox to the hold. As previously discussed eDiscovery practitioners should consider, based on need, if the hold also needs to include the private channel members mailboxes due to non-migrated content. Any private channel messages currently held in the user mailbox will continue to be preserved by the existing hold, but to hold any future messages sent post migration will require a hold placed on the group mailbox. eDiscovery Search and Collection Performing searches related to private channel messages will change after the migration: Before Migration: To collect private channel messages, you targeted the private channel member’s mailbox as a data source in the search. After migration: The private channel messages will be stored in a channel mailbox associated with the parent Team’s M365 group mailbox. That means you include the Team’s M365 group mailbox as a data source in your search. As previously discussed eDiscovery practitioners should consider, based on need, if the search also needs to include the private channel members mailboxes due to non-migrated content. What Isn’t Changing? It’s important to emphasize that only Teams private channel messages are changing in this rollout. Other content locations in Teams remain as they were, so your existing eDiscovery processes remain unchanged: Standard channel messages: These are been stored in the Teams M365 group mailbox. You will continue to place holds on the Team’s M365 group mailbox for standard channel content and target it in searches to do collections. Shared channel messages: Shared channels messages are stored in a channel mailbox linked to the M365 group mailbox for the Team. You continue to place holds and undertake searches by targeting the M365 group mailbox for the Team that contains the shared channel. Teams chats (1:1 or group chats): Teams chats are stored in each user’s Exchange Online mailbox. For eDiscovery, you will continue to search individual user mailboxes for chats and place holds on user mailboxes to preserve chat content. Files and SharePoint data: Any file shared in teams message or uploaded to a SharePoint site associated with a channel remains as it is today. In conclusion For more information regarding timelines, refer to the to the Microsoft Teams blog post “New enhancements in Private Channels in Microsoft Teams unlock their full potential” as well as checking for updates via the Message Center Post MC1134737.Introducing eDiscovery Graph API Standard and Enhancements to Premium APIs
We have been busy working to enable organisations that leverage the Microsoft Purview eDiscovery Graph APIs to benefit from the enhancements in the new modern experience for eDiscovery. I am pleased to share that APIs have now been updated with additional parameters to enable organisations to now benefit from the following features already present in the modern experience within the Purview Portal: Ability to control the export package structure and item naming convention Trigger advanced indexing as part of the Statistics, Add to Review and Export jobs Enables for the first time the ability to trigger HTML transcription of Teams, Viva and Copilot interaction when adding to a review set Benefit from the new statistic options such as Include Categories and Include Keyword Report More granular control of the number of versions collected of modern attachments and documents collected directly collected from OneDrive and SharePoint These changes were communicated as part of the M365 Message Center Post MC1115305. This change involved the beta version of the API calls being promoted into the V1.0 endpoint of the Graph API. The following v1.0 API calls were updated as part of this work: Search Estimate Statistics – ediscoverySearch: estimateStatistics Search Export Report - ediscoverySearch: exportReport Search Export Result - ediscoverySearch: exportResult Search Add to ReviewSet – ediscoveryReviewSet: addToReviewSet ReviewSet Export - ediscoveryReviewSet: export The majority of this blog post is intended to walk through the updates to each of these APIs and provide understanding on how to update your calls to these APIs to maintain a consistent outcome (and benefit from the new functionality). If you are new to the Microsoft Purview eDiscovery APIs you can refer to my previous blog post on how to get started with them. Getting started with the eDiscovery APIs | Microsoft Community Hub First up though, availability of the Graph API for E3 customers We are excited to announce that starting September 9, 2025, Microsoft will launch the eDiscovery Graph API Standard, a new offering designed to empower Microsoft 365 E3 customers with secure, automated data export capabilities. The new eDiscovery Graph API offers scalable, automated exports with secure credential management, improved performance and reliability for Microsoft 365 E3 customers. The new API enables automation of the search, collect, hold, and export flow from Microsoft Purview eDiscovery. While it doesn’t include premium features like Teams/Yammer conversations or advanced indexing (available only with the Premium Graph APIs), it delivers meaningful value for Microsoft 365 E3 customers needing to automate structured legal exports. Key capabilities: Export from Exchange, SharePoint, Teams, Viva Engage and OneDrive for Business Case, search, hold and export management Integration with partner/vendor workflows Support automation that takes advantage of new features within the modern user experience Pricing & Access Microsoft will offer 50 GB of included export volume per tenant per month, with additional usage billed at $10/GB—a price point that balances customer value, sustainability, and market competitiveness. The Graph API Standard will be available in public preview starting September 9. For more details on pay-as-you-go features in eDiscovery and Purview refer to the following links. Billing in eDiscovery | Microsoft Learn Enable Microsoft Purview pay-as-you-go features via subscription | Microsoft Learn Wait, but what about the custodian and noncustodial locations workflow in eDiscovery Classic (Premium)? As you are probably aware, in the modern user experience for eDiscovery there have been some changes to the Data Sources tab and how it is used in the workflow. Typically, organisations leveraging the Microsoft Purview eDiscovery APIs previously would have used the custodian and noncustodial data sources APIs to add the relevant data sources to the case using the following APIs. ediscoveryCustodian resource type - Microsoft Graph v1.0 | Microsoft Learn ediscoveryNoncustodialDataSource resource type - Microsoft Graph v1.0 | Microsoft Learn Once added via the API calls, when creating a search these locations would be bound to a search. This workflow in the API remains supported for backwards compatibility. This includes the creation of system generated case hold policies when applying holds to the locations via these APIs. Organisations can continue to use this approach with the APIs. However, to simplify your code and workflow in the APIs consider using the following API call to add additional sources directly to the search. Add additional sources - Microsoft Graph v1.0 | Microsoft Learn Some key things to note if you continue to use the custodian and noncustodial data sources APIs in your automation workflow. This will not populate the new data sources tab in the modern experience for eDiscovery They can continue to be queried via the API calls Advanced indexing triggered via these APIs will have no influence on if advanced indexing is used in jobs triggered from a search Make sure you use the new parameters to trigger advanced indexing on the job when running the Statistics, Add to Review Set and Direct Export jobs Generating Search Statistics ediscoverySearch: estimateStatistics In eDiscovery Premium (Classic) and the previous version of the APIs, generating statistics was a mandatory step before you could progress to either adding the search to a review set or triggering a direct export. With the new modern experience for eDiscovery, this step is completely optional and is not mandatory. For organizations that previously generated search statistics but never checked or used the results before moving to adding the search to a review set or triggering a direct export job, they can now skip this step. If organizations do want to continue to generate statistics, then calling the updated API with the same parameters call will continue to generate statistics for the search. An example of a previous call would look as follows: POST /security/cases/ediscoveryCases/{ediscoveryCaseId}/searches/{ediscoverySearchId}/estimateStatistics Historically this API didn’t require a request body. With the APIs now natively working with the modern experience for eDiscovery; the API call now supports a request body, enabling you to benefit from the new statistic options. Details on these new options can be found in the links below. Create a search for a case in eDiscovery | Microsoft Learn Evaluate and refine search results in eDiscovery | Microsoft Learn If a search is run without a request body it will still generate the following information: Total matches and volume Number of locations searched and the number of locations with hits Number of data sources searched and the number of data sources with hits The top five data sources that make up the most search hits matching your query Hit count by location type (mailbox versus site) As the API is now natively working with the modern experience for eDiscovery you can optionally include a request body to pass the statisticOptions parameter in the POST API call. With the changes to how Advanced Indexing works within the new UX and the additional reporting categories available, you can use the statisticsOptions parameter to trigger the generate statistic job with the additional options within the modern experience for the modern UX. The values you can include are detailed in the table below. Property Option from Portal includeRefiners Include categories: Refine your view to include people, sensitive information types, item types, and errors. includeQueryStats Include query keywords report: Assess keyword relevance for different parts of your search query. includeUnindexedStats Include partially indexed items: We'll provide details about items that weren't fully indexed. These partially indexed items might be unsearchable or partially searchable advancedIndexing Perform advanced indexing on partially indexed items: We'll try to reindex a sample of partially indexed items to determine whether they match your query. After running the query, check the Statistics page to review information about partially indexed items. Note: Can only be used if includeUnindexedStats is also included. locationsWithoutHits Exclude partially indexed items in locations without search hits: Ignore partially indexed items in locations with no matches to the search query. Checking this setting will only return partially indexed items in locations where there is already at least one hit. Note: Can only be used if includeUnindexedStats is also included. In eDiscovery Premium (Classic) the advanced indexing took place when a custodian or non-custodial data location was added to the Data Sources tab. This means that when you triggered the estimate statistics call on the search it would include results from both the native Exchange and SharePoint index as well as the Advanced Index. In the modern experience for eDiscovery, the advanced indexing runs as part of the job. However, this must be selected as an option on the job. Note that not all searches will benefit from advanced indexing, one example would be a simple date range search on a mailbox or SPO site as this will still have hits on the partially indexed items (even partial indexed email and SPO file items have date metadata in the native indexes). The following example using PowerShell and the Microsoft Graph PowerShell module and passes the new StatisticsOptions parameter to the POST call and selects all available options. # Generate estimates for the newly created search $statParams = @{ statisticsOptions = "includeRefiners,includeQueryStats,includeUnindexedStats,advancedIndexing,locationsWithoutHits" } $params = $statParams | ConvertTo-Json -Depth 10 $uri = "https://graph.microsoft.com/v1.0/security/cases/ediscoveryCases/$caseID/searches/$searchID/estimateStatistics" Invoke-MgGraphRequest -Method Post -Uri $uri -Body $params Write-Host "Estimate statistics generation triggered for search ID: $searchID" Once run, it will create a generated statistic job with the additional options selected. Direct Export - Report ediscoverySearch: exportReport This API enables you to generate an item report directly form a search without taking the data into a review set or exporting the items that match the search. With the APIs now natively working with the modern experience for eDiscovery, new parameters have been added to the request body as well as new values available for existing parameters. The new parameters are as follows: cloudAttachmentVersion: The versions of cloud attachments to include in messages ( e.g. latest, latest 10, latest 100 or All). This controls how many versions of a file that is collected when a cloud attachment is contained within a email, teams or viva engage messages. If version shared is configured this is also always returned. documentVersion: The versions of files in SharePoint to include (e.g. latest, latest 10, latest 100 or All). This controls how many versions of a file that is collected when targeting a SharePoint or OneDrive site directly in the search. These new parameters reflect the changes made in the modern experience for eDiscovery that provides more granular control for eDiscovery managers to apply different collection options based on where the SPO item was collected from (e.g. directly from a SPO site vs a cloud attachment link included in an email). Within eDiscovery Premium (Classic) the All Document Versions option applied to both SharePoint and OneDrive files collected directly from SharePoint and any cloud attachments contained within email, teams and viva engage messages. Historically for this API, within the additionalOptions parameter you could include the allDocumentVersions value to trigger the collection of all versions of any file stored in SharePoint and OneDrive. With the APIs now natively working with the modern experience for eDiscovery, the allDocumentVersions value can still be included in the additionalOptions parameter but it will only apply to files collected directly from a SharePoint or OneDrive site. It will not influence any cloud attachments included in email, teams and viva engage messages. To collect additional versions of cloud attachments use the cloudAttachmentVersion parameter to control the number of versions that are included. Also consider moving from using the allDocumentVersions value in the additionalOptions parameter and switch to using the new documentVersion parameter. As described earlier, to benefit from advanced indexing in the modern experience for eDiscovery, you must trigger advanced indexing as part of the direct export job. Within the portal to include partially indexed items and run advanced indexing you would make the following selections. To achieve this via the API call we need to ensure we include the following parameters and values into the request body of the API call. Parameter Value Option from the portal additionalOptions advancedIndexing Perform advanced indexing on partially indexed items exportCriteria searchHits, partiallyIndexed Indexed items that match your search query and partially indexed items exportLocation responsiveLocations, nonresponsiveLocations Exclude partially indexed items in locations without search hits. Finally, in the new modern experience for eDiscovery more granular control has been introduced to enable organisations to independently choose to convert Teams, Viva Engage and Copilot interactions into HTML transcripts and the ability to collect up to 12 hours of related conversations when a message matches a search. This is reflected in the job settings by the following options: Organize conversations into HTML transcripts Include Teams and Viva Engage conversations In the classic experience this was a single option titled Teams and Yammer Conversations that did both actions and was controlled by including the teamsAndYammerConversations value in the additionalOptions parameter. With the APIs now natively working with the modern experience for eDiscovery, the teamsAndYammerConversations value can still be included in the additionalOptions parameter but it will only trigger the collection of up to 12 hours of related conversations when a message matches a search without converting the items into HTML transcripts. To do this we need to include the new value of htmlTranscripts in the additionalOptions parameter. As an example, lets look at the following direct export report job from the portal and use the Microsoft Graph PowerShell module to call the exportReport API call with the updated request body. $exportName = "New UX - Direct Export Report" $exportParams = @{ displayName = $exportName description = "Direct export report from the search" additionalOptions = "teamsAndYammerConversations,cloudAttachments,htmlTranscripts,advancedIndexing" exportCriteria = "searchHits,partiallyIndexed" documentVersion = "recent10" cloudAttachmentVersion = "recent10" exportLocation = "responsiveLocations" } $params = $exportParams | ConvertTo-Json -Depth 10 $uri = https://graph.microsoft.com/v1.0/security/cases/ediscoveryCases/$caseID/searches/$searchID/exportReport" $exportResponse = Invoke-MgGraphRequest -Method Post -Uri $uri -Body $params Direct Export - Results ediscoverySearch: exportResult - Microsoft Graph v1.0 | Microsoft Learn This API call enables you to export the items from a search without taking the data into a review set. All the information from the above section on the changes to the exportReport API also applies to this API call. However with this API call we will actually be exporting the items from the search and not just the report. As such we need to pass in the request body information on how we want the export package to look. Previously with direct export for eDiscovery Premium (Classic) you had a three options in the UX and in the API to define the export format. Option Exchange Export Structure SharePoint / OneDrive Export Structure Individual PST files for each mailbox PST created for each mailbox. The structure of each PST is reflective of the folders within the mailbox with emails stored based on their original location in the mailbox. Emails named based on their subject. Folder for each mailbox site. Within each folder, the structure is reflective of the SharePoint/OneDrive site with documents stored based on their original location in the site. Documents are named based on their document name. Individual .msg files for each message Folder created for each mailbox. Within each folder the file structure within is reflective of the folders within the mailbox with emails stored as .msg files based on their original location in the mailbox. Emails named based on their subject. As above. Individual .eml files for each message Folder created for each mailbox. Within each folder the file structure within is reflective of the folder within the mailbox with emails stored as .eml files based on their original location in the mailbox. Emails named based on their subject As above. Historically with this API, the exportFormat parameter was used to control the desired export format. Three values could be used and they were pst, msg and eml. This parameter is still relevant but only controls how email items will be saved, either in a PST file, as individual .msg files or as individual .eml files. Note: The eml export format option is depreciated in the new UX. Going forward you should use either pst or msg. With the APIs now natively working with the modern experience for eDiscovery; we need to account for the additional flexibility customers have to control the structure of their export package. An example of the options available in the direct export job can be seen below. More information on the export package options and what they control can be found in the following link. https://learn.microsoft.com/en-gb/purview/edisc-search-export#export-package-options To support this, new values have been added to the additionalOptions parameter for this API call, these must be included in the request body otherwise the export structure will be as follows. exportFormat value Exchange Export Structure SharePoint / OneDrive Export Structure pst PST files created that containing data from multiple mailboxes. All emails contained within a single folder within the PST. Emails named a based on an assigned unique identifier (GUID) One folder for all documents. All documents contained within a single folder. Documents are named based on an assigned unique identifier (GUID) msg Folder created containing data from all mailboxes. All emails contained within a single folder stored as .msg files. Emails named a based on an assigned unique identifier (GUID) As above. The new values added to the additionalOptions parameters are as follows. They control the export package structure for both Exchange and SharePoint/OneDrive items. Property Option from Portal splitSource Organize data from different locations into separate folders or PSTs includeFolderAndPath Include folder and path of the source condensePaths Condense paths to fit within 259 characters limit friendlyName Give each item a friendly name Organizations are free to mix and match which export options they include in the request body to meet their own organizational requirements. To receive a similar output structure when previously using the pst or msg values in the exportFormat parameter I would include all of the above values in the additionalOptions parameter. For example, to generate a direct export where the email items are stored in separate PSTs per mailbox, the structure of the PST files reflects the mailbox and each items is named as per the subject of the email; I would use the Microsoft Graph PowerShell module to call the exportResults API call with the updated request body. $exportName = "New UX - DirectExportJob - PST" $exportParams = @{ displayName = $exportName description = "Direct export of items from the search" additionalOptions = "teamsAndYammerConversations,cloudAttachments,htmlTranscripts,advancedIndexing,includeFolderAndPath,splitSource,condensePaths,friendlyName" exportCriteria = "searchHits,partiallyIndexed" documentVersion = "recent10" cloudAttachmentVersion = "recent10" exportLocation = "responsiveLocations" exportFormat = "pst" } $params = $exportParams | ConvertTo-Json -Depth 10 $uri = “https://graph.microsoft.com/v1.0/security/cases/ediscoveryCases/$caseID/searches/$searchID/exportResult" $exportResponse = Invoke-MgGraphRequest -Method Post -Uri $uri -Body $params If I want to export the email items as individual .msg files instead of storing them in PST files; I would use the Microsoft Graph PowerShell module to call the exportResults API call with the updated request body. $exportName = "New UX - DirectExportJob - MSG" $exportParams = @{ displayName = $exportName description = "Direct export of items from the search" additionalOptions = "teamsAndYammerConversations,cloudAttachments,htmlTranscripts,advancedIndexing,includeFolderAndPath,splitSource,condensePaths,friendlyName" exportCriteria = "searchHits,partiallyIndexed" documentVersion = "recent10" cloudAttachmentVersion = "recent10" exportLocation = "responsiveLocations" exportFormat = "msg" } $params = $exportParams | ConvertTo-Json -Depth 10 $uri = " https://graph.microsoft.com/v1.0/security/cases/ediscoveryCases/$caseID/searches/$searchID/exportResult" Add to Review Set ediscoveryReviewSet: addToReviewSet This API call enables you to commit the items that match the search to a Review Set within an eDiscovery case. This enables you to review, tag, redact and filter the items that match the search without exporting the data from the M365 service boundary. Historically with this API call it was more limited compared to triggering the job via the eDiscovery Premium (Classic) UI. With the APIs now natively working with the modern experience for eDiscovery organizations can make use of the enhancements made within the modern UX and have greater flexibility in selecting the options that are relevant for your requirements. There is a lot of overlap with previous sections, specifically the “Direct Export – Report” section on what updates are required to benefit from updated API. They are as follows: Controlling the number of versions of SPO and OneDrive documents added to the review set via the new cloudAttachmentVersion and documentVersion parameters Enabling organizations to trigger the advanced indexing of partial indexed items during the add to review set job via new values added to existing parameters However there are some nuances to the parameter names and the values for this specific API call compared to the exportReport API call. For example, with this API call we use the additionalDataOptions parameter opposed to the additionalOptions parameter. As with the exportReport and exportResult APIs, there are new parameters to control the number of versions of SPO and OneDrive documents added to the review set are as follows: cloudAttachmentVersion: The versions of cloud attachments to include in messages ( e.g. latest, latest 10, latest 100 or All). This controls how many versions of a file that is collected when a cloud attachment is contained within a email, teams or viva engage messages. If version shared is configured this is also always returned. documentVersion: The versions of files in SharePoint to include (e.g. latest, latest 10, latest 100 or All). This controls how many versions of a file that is collected when targeting a SharePoint or OneDrive site directly in the search. Historically for this API call, within the additionalDataOptions parameter you could include the allVersions value to trigger the collection of all versions of any file stored in SharePoint and OneDrive. With the APIs now natively working with the modern experience for eDiscovery, the allVersions value can still be included in the additionalDataOptions parameter but it will only apply to files collected directly from a SharePoint or OneDrive site. It will not influence any cloud attachments included in email, teams and viva engage messages. To collect additional versions of cloud attachments use the cloudAttachmentVersion parameter to control the number of versions that are included. Also consider moving from using the allDocumentVersions value in the additionalDataOptions parameter and switch to using the new documentVersion parameter. To benefit from advanced indexing in the modern experience for eDiscovery, you must trigger advanced indexing as part of the add to review set job. Within the portal to include partially indexed items and run advanced indexing you would make the following selections. To achieve this via the API call we need to ensure we include the following parameters and values into the request body of the API call. Parameter Value Option from the portal additionalDataOptions advancedIndexing Perform advanced indexing on partially indexed items itemsToInclude searchHits, partiallyIndexed Indexed items that match your search query and partially indexed items additionalDataOptions locationsWithoutHits Exclude partially indexed items in locations without search hits. Historically the API call didn’t support the add to review set job options to convert Teams, Viva Engage and Copilot interactions into HTML transcripts and collect up to 12 hours of related conversations when a message matches a search. With the APIs now natively working with the modern experience for eDiscovery this is now possible by adding support for the htmlTranscripts and messageConversationExpansion values to the addtionalDataOptions parameter. As an example, let’s look at the following add to review set job from the portal and use the Microsoft Graph PowerShell module to invoke the addToReviewSet API call with the updated request body. $commitParams = @{ search = @{ id = $searchID } additionalDataOptions = "linkedFiles,advancedIndexing,htmlTranscripts,messageConversationExpansion,locationsWithoutHits" cloudAttachmentVersion = "latest" documentVersion = "latest" itemsToInclude = "searchHits,partiallyIndexed" } $params = $commitParams | ConvertTo-Json -Depth 10 $uri = "https://graph.microsoft.com/v1.0/security/cases/ediscoveryCases/$caseID/reviewSets/$reviewSetID/addToReviewSet" Invoke-MgGraphRequest -Method Post -Uri $uri -Body $params Export from Review Set ediscoveryReviewSet: export This API call enables you to export items from a Review Set within an eDiscovery case. Historically with this API, the exportStructure parameter was used to control the desired export format. Two values could be used and they were directory and pst. This parameter has had been updated to include a new value of msg. Note: The directory value is depreciated in the new UX but remains available in v1.0 of the API call for backwards compatibility. Going forward you should use msg alongside the new exportOptions values. The exportStructure parameter will only control how email items are saved, either within PST files or as individual .msg files. With the APIs now natively working with the modern experience for eDiscovery; we need to account for the additional flexibility customers have to control the structure of their export package. An example of the options available in the direct export job can be seen below. As with the exportResults API call for direct export, new values have been added to the exportOptions parameter for this API call. The new values added to the exportOptions parameters are as follows. They control the export package structure for both Exchange and SharePoint/OneDrive items. Property Option from Portal splitSource Organize data from different locations into separate folders or PSTs includeFolderAndPath Include folder and path of the source condensePaths Condense paths to fit within 259 characters limit friendlyName Give each item a friendly name Organizations are free to mix and match which export options they include in the request body to meet their own organizational requirements. To receive an equivalent output structure when previously using the pst value in the exportStructure parameter I would include all of the above values in the exportOptions parameter within the request body. An example using the Microsoft Graph PowerShell module can be found below. $exportName = "ReviewSetExport - PST" $exportParams = @{ outputName = $exportName description = "Exporting all items from the review set" exportOptions = "originalFiles,includeFolderAndPath,splitSource,condensePaths,friendlyName" exportStructure = "pst" } $params = $exportParams | ConvertTo-Json -Depth 10 $uri = "https://graph.microsoft.com/v1.0/security/cases/ediscoveryCases/$caseID/reviewSets/$reviewSetID/export" Invoke-MgGraphRequest -Method Post -Uri $uri -Body $params To receive an equivalent output structure when previously using the directory value in the exportStructure parameter I would instead use the msg value within the request body. As the condensed directory structure format export all items into a single folder, all named based on uniquely assigned identifier I do not need to include the new values added to the exportOptions parameter. An example using the Microsoft Graph PowerShell module can be found below. An example using the Microsoft Graph PowerShell module can be found below. $exportName = "ReviewSetExport - MSG" $exportParams = @{ outputName = $exportName description = "Exporting all items from the review set" exportOptions = "originalFiles" exportStructure = "msg" } $params = $exportParams | ConvertTo-Json -Depth 10 $uri = "https://graph.microsoft.com/v1.0/security/cases/ediscoveryCases/$caseID/reviewSets/$reviewSetID/export" Invoke-MgGraphRequest -Method Post -Uri $uri -Body $params Continuing to use the directory value in exportStructure will produce the same output as if msg was used. Wrap Up Thank you for your time reading through this post. Hopefully you are now equipped with the information needed to make the most of the new modern experience for eDiscovery when making your Graph API calls.Upcoming changes to Microsoft Purview eDiscovery
Today, we are announcing three significant updates to the Microsoft Purview eDiscovery products and services. These updates reinforce our commitment to meeting and exceeding the data security, privacy, and compliance requirements of our customers. To improve security and help protect customers and their data, we have accelerated the timeline for the below changes, which will be enforced by default on May 26. The following features will be retired from the Microsoft Purview portal: Content Search will transition to the new unified Purview eDiscovery experience. The eDiscovery (Standard) classic experience will transition to the new unified Purview eDiscovery experience. The eDiscovery export PowerShell cmdlet parameters will be retired. These updates aim to unify and simplify the eDiscovery user experience in the new Microsoft Purview Portal, while preserving the accessibility and integrity of existing eDiscovery cases. Content Search transition to the new unified Purview eDiscovery experience The classic eDiscovery Content Search solution will be streamlined into the new unified Purview eDiscovery experience. Effective May 26 th , the Content Search solution will no longer be available in the classic Purview portal. Content Search provides administrators with the ability to create compliance searches to investigate data located in Microsoft 365. We hear from customers that the Content Seach tool is used to investigate data privacy concerns, perform legal or incident investigations, validate data classifications, etc. Currently, each compliance search created in the Content Search tool is created outside of the boundaries of a Purview eDiscovery (Standard) case. This means that administrators in Purview Role Groups containing the Compliance Search role can view all Content Searches in their tenant. While the Content Search solution does not enable any additional search permission access, the view of all Content Searches in a customer tenant is not an ideal architecture. Alternatively, when using a Purview eDiscovery case, these administrators only have access to cases in which they are assigned. Customers can now create their new compliance searches within an eDiscovery case using the new unified Purview eDiscovery experience. All content searches in a tenant created prior to May 26, 2025 are now accessible in the new unified Purview eDiscovery experience within a case titled “Content Search”. Although the permissions remain consistent, eDiscovery managers and those with custom permissions will now only be able to view searches from within the eDiscovery cases in which they are assigned, including the “Content Search” case. eDiscovery Standard transition to the new unified Purview eDiscovery experience The classic Purview eDiscovery (Standard) solution experience has transitioned into the new unified Purview eDiscovery experience. Effective May 26 th , the classic Purview eDiscovery (Standard) solution will no longer be available to customers within the classic Purview portal. All existing eDiscovery cases created in the classic purview experience are now available within the new unified Purview eDiscovery experience. Retirement of eDiscovery Export PowerShell Cmdlet parameters The Export parameter within the ComplianceSearchAction eDiscovery PowerShell cmdlets will be retired on May 26, 2025: New-ComplianceSearchAction -Export parameter (and parameters dependent on export such as Report, Retentionreport …) Get-ComplianceSearchAction -Export parameter Set-ComplianceSearchAction -ChangeExportKey parameter We recognize that the removal of the Export parameter may require adjustments to your current workflow process when using Purview eDiscovery (Standard). The remaining Purview eDiscovery PowerShell cmdlets will continue to be supported after May 26 th , 2025: Create and update Compliance Cases New-ComplianceCase, Set-ComplianceCase Create and update Case Holds New-CaseHoldPolicy, Set-CaseHoldPolicy, New-CaseHoldRule, Set-CaseHoldRule Create, update and start Compliance Searches New-ComplianceSearch,Set-ComplianceSearch, Start-ComplianceSearch, Apply Purge action to a Compliance Search New-ComplianceSearchAction -Purge Additionally, if you have a Microsoft 365 E5 license and use eDiscovery (Premium), your organization can script all eDiscovery operations, including export, using the Microsoft Graph eDiscovery APIs. Purview eDiscovery Premium On May 26 th , there will be no changes to the classic Purview eDiscovery (Premium) solution in the classic Purview portal. Cases that were created using the Purview eDiscovery (Premium) classic case experience can also now be accessed in the new unified Purview eDiscovery experience. We recognize that these changes may impact your current processes, and we appreciate your support as we implement these updates. Microsoft runs on trust and protecting your data is our utmost priority. We believe these improvements will provide a more secure and reliable eDiscovery experience. To learn more about the Microsoft Purview eDiscovery solution and become an eDiscovery Ninja, please check out our eDiscovery Ninja Guide at https://aka.ms/eDiscoNinja!What’s New in Microsoft Purview eDiscovery
As organizations continue to navigate increasingly complex compliance and legal landscapes, Microsoft Purview eDiscovery is adapting to address these challenges. New and upcoming enhancements will improve how legal and compliance teams manage cases, streamline workflows, and reduce operational friction. Here’s a look at some newly released features and some others that are coming soon. Enhanced Reporting in Modern eDiscovery The modern eDiscovery experience now offers comprehensive reporting capabilities that capture every action taken within a case. This creates an auditable record of actions, enabling users to manage case activities confidently and accurately. These enhancements are critical for defensibility and audit readiness, and they also help users better understand the outcomes of their searches based on the options and settings they selected. Recent improvements include: Compliance boundary visibility: The Summary.csv report now includes the compliance boundary settings that were applied to the search query. This helps clarify search results, especially when different users have varying access permissions across data locations. Decryption settings: Visibility has been added to the Settings.csv report to indicate if a specific process has Exchange or SharePoint decryption capabilities enabled. This ensures users can verify whether encrypted content can be successfully decrypted during the process of adding to a review set or export. Visibility into Premium feature usage: There is a new value in the Settings.csv report that indicates whether Premium features were enabled for the process. Improved clarity: The Items.csv report now includes an "Added by" column to understand how the item was identified. This column shows if items were included by direct search (IndexedQuery), partial indexing (UnindexedQuery), or advanced indexing (AdvancedIndex). Contextual information: The Summary.csv report helps users understand their exported data by providing contextual explanations. For instance, it explains how the volume of exported data may be greater than the search estimate due to factors such as cloud attachments or multiple versions of SharePoint documents. Copy Search to Hold: Reuse with Confidence Another commonly requested feature that is now available is the ability to create a hold from a search. If your workflow starts with searches before creating holds, you can use the new, “Create a hold” button to create a new hold policy based on that search. Depending on your workflow, it can be effective to start off with a broad, high-level search across the entire data source to quickly surface potentially relevant content and gauge the approximate amount of data that may need review. For example, in a litigation scenario, you may want to search across the entire mailbox and OneDrive of custodians that are of interest. Once the preservation obligation is triggered, this new feature easily allows you to copy your search and create a hold to preserve the content, streamlining your workflow and enhancing efficiency. Whether you begin with a highly targeted search or something broader, this feature reduces duplication of effort and ensures consistency across processes when you want to turn an existing search into a hold. Retry Failed Locations: Easily Address Processing Issues Searches can occasionally encounter issues due to temporarily inaccessible locations. The new “Retry failed locations” feature introduces a simple, automated way to reprocess those issues without restarting the entire job. When you retry the failed locations, the results will be aggregated with the original job to provide a comprehensive overview. This feature is particularly beneficial for administrators, allowing them to efficiently retry the search while ensuring continuity in their workflow. Duplicate Search: Consistency Made Easy Save time and reduce rework by duplicating an existing search with just a few mouse clicks. Whether you're building on a previous query or rerunning it with slight adjustments, this new feature lets you preserve all original parameters, such as conditions, data sources, and locations, so you can move faster with confidence and consistency. Administrators and users simply click the “Duplicate search” button while on an existing search and then rename it. Case-Level Data Source Management: The New Data Sources Tab We recently introduced a new case-level Data Sources view in Purview eDiscovery, allowing data sources to be reused in searches and holds within a case. This enhancement allows case administrators to map and manage all relevant data locations, including mailboxes, SharePoint sites, Teams channels, and more, directly within a case. Once data sources have been added, it greatly simplifies the process of creating searches. Adding data sources within the Data Sources tab enables administrators to select from a list of previously added sources when creating new searches, rather than searching for them each time. This feature is especially useful for frequent searches across the same data sources, which happens often within eDiscovery. With this feature, users can: Visualize all data sources tied to a case. Use data source locations to populate searches and eDiscovery hold policies. Simplify the search creation process for administrators and users. This new functionality empowers teams to make more informed decisions about what to preserve, search, and review. Delete Searches and Search Exports: Keep Your Case Well Organized A newly released feature is one that helps you remove outdated or redundant searches from a case, helping keep the workspace clean and focused. With just a few clicks, you can delete searches that are no longer relevant, helping you stay focused on what matters most without extra clutter. Whether you're tidying up after a project or clearing out test runs, deletion helps keep you organized. hot showing how to delete a search. Another new feature enables users to delete search exports. This functionality is intended to assist with the management of case data and to remove unnecessary or outdated search exports, including sensitive information that is no longer required. Condition Builder Enhancements for Logical Operators (AND, OR, NEAR) The Condition Builder now supports logical operators—AND, OR, and NEAR—all within the same line, or grid. These enhancements empower users to construct more targeted search conditions and offer increased control over the use of phrases, enabling additional options over how terms are combined and matched, and proving greater flexibility to keyword queries. Tenant level control over Premium Features An upcoming enhancement will introduce a tenant-level setting to allow organizations to set the default behavior for new case creation and whether to use Premium features by default. This will provide greater flexibility and control, especially for customers that are in a mixed-license environment. Export Naming and Controlling Size of Exports A couple more upcoming enhancements are intended to give users more control and additional options over the export process, increasing flexibility for legal and compliance teams. First, export packages will include the user-defined export name directly in the download package. This small but impactful change simplifies tracking and association of exported data with specific cases. This is especially useful when managing multiple exports across different cases. Second, a new configuration setting will allow administrators to define a maximum export package size. This gives teams greater control over how data is partitioned, helping to optimize performance and reduce the risk of download issues or browser timeouts during large exports. Takeaways These updates are part of a broader modernization of the Purview eDiscovery experience, which includes a unified user experience, enhanced reporting, and a more streamlined and intuitive workflow for teams managing regulatory inquiries, litigation, or investigations. These enhancements aim to reduce friction, streamline workflows, and accelerate productivity. To learn more about thew new eDiscovery user experience, visit our Microsoft documentation at https://aka.ms/ediscoverydocsnew For more updates on the future of eDiscovery, please check out our product roadmap at https://aka.ms/ediscoveryroadmap To become a Purview eDiscovery Ninja, check out our eDiscovery Ninja Guide at: https://aka.ms/ediscoveryninjaUsing Copilot in Fabric with Confidence: Data Security, Compliance & Governance with DSPM for AI
Introduction As organizations embrace AI to drive innovation and productivity, ensuring data security, compliance, and governance becomes paramount. Copilot in Microsoft Fabric offers powerful AI-driven insights. But without proper oversight, users can misuse copilot to expose sensitive data or violate regulatory requirements. Enter Microsoft Purview’s Data Security Posture Management (DSPM) for AI—a unified solution that empowers enterprises to monitor, protect, and govern AI interactions across Microsoft and third-party platforms. We are excited to announce the general availability of Microsoft Purview capabilities for Copilot in Fabric, starting with Copilot in Power BI. This blog explores how Purview DSPM for AI integrates with Copilot in Fabric to deliver robust data protection and governance and provides a step-by-step guide to enable this integration. Capabilities of Purview DSPM for AI As organizations adopt AI, implementing data controls and Zero Trust approach is crucial to mitigate risks like data oversharing and leakage, and potential non-compliant usage in AI. We are excited to announce Microsoft Purview capabilities for Copilot in Fabric, starting with Copilot for Power BI, By combining Microsoft Purview and Copilot for Power BI, users can: Discover data risks such as sensitive data in user prompts and responses in Activity Explorer and receive recommended actions in their Microsoft Purview DSPM for AI Reports to reduce these risks. DSPM for AI Activity Explorer DSPM for AI Reports If you find Copilot in Fabric actions in DSPM for AI Activity Explorer or reports to be potentially inappropriate or malicious, you can look for further information in Insider Risk Management (IRM), through an eDiscovery case, Communication Compliance (CC), or Data Lifecycle Management (DLM). Identify risky AI usage with Microsoft Purview Insider Risk Management to investigate risky AI usage, such as an inadvertent user who has neglected security best practices and shared sensitive data in AI. Govern AI usage with Microsoft Purview Audit, Microsoft Purview eDiscovery, retention policies, and non-compliant or unethical AI usage detection with Purview Communication Compliance. Purview Audit provides a detailed log of user and admin activity within Copilot in Fabric, enabling organizations to track access, monitor usage patterns, and support forensic investigations. Purview eDiscovery enables legal and investigative teams to identify, collect, and review Copilot in Fabric interactions as part of case workflows, supporting defensible investigations Communication Compliance helps detect potential policy violations or risky behavior in administrator interactions, enabling proactive monitoring and remediation for Copilot in Fabric Data Lifecycle Management allows teams to automate the retention, deletion, and classification of Copilot in Fabric data—reducing storage costs and minimizing risk from outdated or unnecessary information Steps to Enable the Integration To use DSPM for AI from the Microsoft Purview portal, you must have the following prerequisites, Activate Purview Audit which requires user to have the role of Entra Compliance Admin or Entra Global admin to enable Purview Audit. More details on DSPM pre-requisites can be found here, Considerations for deploying Microsoft Purview Data Security Posture Management (DSPM) for AI | Microsoft Learn To enable Purview DSPM for AI for Copilot for Power BI, Step 1: Enable DSPM for AI Policies Navigate to Microsoft Purview DSPM for AI. Enable the one-click policy: “DSPM for AI – Capture interactions for Copilot experiences”. Optionally enable additional policies: Detect risky AI usage Detect unethical behavior in AI apps These policies can be configured in the Microsoft Purview DSPM for AI portal and tailored to your organization’s risk profile. Step 2: Monitor and Act Use DSPM for AI Reports and Activity Explorer to monitor AI interactions. Apply IRM, DLM, CC and eDiscovery actions as needed. Purview Roles and Permissions Needed by Users To manage and operate DSPM for AI effectively, assign the following roles: Role Responsibilities Purview Compliance Administrator Full access to configure policies and DSPM for AI setup Purview Security Reader View reports, dashboards, policies and AI Activity Content Explorer Content Viewer Additional Permission to view the actual prompts and responses on top of the above permissions More details on Purview DSPM for AI Roles & permissions can be found here, Permissions for Microsoft Purview Data Security Posture Management for AI | Microsoft Learn Purview Costs Microsoft Purview now offers a combination of entitlement-based (per-user-per-month) and Pay-As-You-Go (PAYG) pricing models. The PAYG model applies to a broader set of Purview capabilities—including Insider Risk Management, Communication Compliance, eDiscovery, and other data security and governance solutions—based on copilot for Power BI usage volume or complexity. Purview Audit logging of Copilot for Power BI activity remains included at no additional cost as part of Microsoft 365 E5 licensing. This flexible pricing structure ensures that organizations only pay for what they use as data flows through AI models, networks, and applications. For further details, please refer to this blog: New Purview pricing options for protecting AI apps and agents | Microsoft Community Hub Conclusion Microsoft Purview DSPM for AI is a game-changer for organizations looking to adopt AI responsibly. By integrating with Copilot in Fabric, it provides a comprehensive framework to discover, protect, and govern AI interactions—ensuring compliance, reducing risk, and enabling secure innovation. Whether you're a Fabric Admin, compliance admin or security admin, enabling this integration is a strategic step toward building a secure, AI-ready enterprise. Additional resources Use Microsoft Purview to manage data security & compliance for Microsoft Copilot in Fabric | Microsoft Learn How to deploy Microsoft Purview DSPM for AI to secure your AI apps Learn how Microsoft Purview Data Security Posture Management (DSPM) for AI provides data security and compliance protections for Copilots and other generative AI apps | Microsoft Learn Considerations for deploying Microsoft Purview Data Security Posture Management (DSPM) for AI | Microsoft Learn Learn about Microsoft Purview billing models | Microsoft LearnSecure and govern AI apps and agents with Microsoft Purview
The Microsoft Purview family is here to help you secure and govern data across third party IaaS and Saas, multi-platform data environment, while helping you meet compliance requirements you may be subject to. Purview brings simplicity with a comprehensive set of solutions built on a platform of shared capabilities, that helps keep your most important asset, data, safe. With the introduction of AI technology, Purview also expanded its data coverage to include discovering, protecting, and governing the interactions of AI apps and agents, such as Microsoft Copilots like Microsoft 365 Copilot and Security Copilot, Enterprise built AI apps like Chat GPT enterprise, and other consumer AI apps like DeepSeek, accessed through the browser. To help you view, investigate interactions with all those AI apps, and to create and manage policies to secure and govern them in one centralized place, we have launched Purview Data Security Posture Management (DSPM) for AI. You can learn more about DSPM for AI here with short video walkthroughs: Learn how Microsoft Purview Data Security Posture Management (DSPM) for AI provides data security and compliance protections for Copilots and other generative AI apps | Microsoft Learn Purview capabilities for AI apps and agents To understand our current set of capabilities within Purview to discover, protect, and govern various AI apps and agents, please refer to our Learn doc here: Microsoft Purview data security and compliance protections for Microsoft 365 Copilot and other generative AI apps | Microsoft Learn Here is a quick reference guide for the capabilities available today: Note that currently, DLP for Copilot and adhering to sensitivity label are currently designed to protect content in Microsoft 365. Thus, Security Copilot and Coplot in Fabric, along with Copilot studio custom agents that do not use Microsoft 365 as a content source, do not have these features available. Please see list of AI sites supported by Microsoft Purview DSPM for AI here Conclusion Microsoft Purview can help you discover, protect, and govern the prompts and responses from AI applications in Microsoft Copilot experiences, Enterprise AI apps, and other AI apps through its data security and data compliance solutions, while allowing you to view, investigate, and manage interactions in one centralized place in DSPM for AI. Follow up reading Check out the deployment guides for DSPM for AI How to deploy DSPM for AI - https://aka.ms/DSPMforAI/deploy How to use DSPM for AI data risk assessment to address oversharing - https://aka.ms/dspmforai/oversharing Address oversharing concerns with Microsoft 365 blueprint - aka.ms/Copilot/Oversharing Explore the Purview SDK Microsoft Purview SDK Public Preview | Microsoft Community Hub (blog) Microsoft Purview documentation - purview-sdk | Microsoft Learn Build secure and compliant AI applications with Microsoft Purview (video) References for DSPM for AI Microsoft Purview data security and compliance protections for Microsoft 365 Copilot and other generative AI apps | Microsoft Learn Considerations for deploying Microsoft Purview AI Hub and data security and compliance protections for Microsoft 365 Copilot and Microsoft Copilot | Microsoft Learn Block Users From Sharing Sensitive Information to Unmanaged AI Apps Via Edge on Managed Devices (preview) | Microsoft Learn as part of Scenario 7 of Create and deploy a data loss prevention policy | Microsoft Learn Commonly used properties in Copilot audit logs - Audit logs for Copilot and AI activities | Microsoft Learn Supported AI sites by Microsoft Purview for data security and compliance protections | Microsoft Learn Where Copilot usage data is stored and how you can audit it - Microsoft 365 Copilot data protection and auditing architecture | Microsoft Learn Downloadable whitepaper: Data Security for AI Adoption | Microsoft Explore the roadmap for DSPM for AI Public roadmap for DSPM for AI - Microsoft 365 Roadmap | Microsoft 365PMPur
