Security Dashboard for AI - Now Generally Available
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. 53% of security professionals say their current AI risk management needs improvement, presenting an opportunity to better identify, assess and manage risk effectively. 1 At the same time, 86% of leaders prefer integrated platforms over fragmented tools, citing better visibility, fewer alerts and improved efficiency. 2 To address these needs, we are excited to announce the Security Dashboard for AI, previously announced at Microsoft Ignite, is now generally available. This unified dashboard aggregates posture and real-time risk signals from Microsoft Defender, Microsoft Entra, and Microsoft Purview - enabling users to see left-to-right across purpose-built security tools from within a single pane of glass. The dashboard equips CISOs and AI risk leaders with a governance tool to discover agents and AI apps, track AI posture and drift, and correlate risk signals to investigate and act across their entire AI ecosystem. Security teams can continue using the tools they trust while empowering security leaders to govern and collaborate effectively. Gain Unified AI Risk Visibility Consolidating risk signals from across purpose-built tools can simplify AI asset visibility and oversight, increase security teams’ efficiency, and reduce the opportunity for human error. The Security Dashboard for AI provides leaders with unified AI risk visibility by aggregating security, identity, and data risk across Defender, Entra, Purview into a single interactive dashboard experience. The Overview tab of the dashboard provides users with an AI risk scorecard, providing immediate visibility to where there may be risks for security teams to address. It also assesses an organization's implementation of Microsoft security for AI capabilities and provides recommendations for improving AI security posture. The dashboard also features an AI inventory with comprehensive views to support AI assets discovery, risk assessments, and remediation actions for broad coverage of AI agents, models, MCP servers, and applications. The dashboard provides coverage for all Microsoft AI solutions supported by Entra, Defender and Purview—including Microsoft 365 Copilot, Microsoft Copilot Studio agents, and Microsoft Foundry applications and agents—as well as third-party AI models, applications, and agents, such as Google Gemini, OpenAI ChatGPT, and MCP servers. This supports comprehensive visibility and control, regardless of where applications and agents are built. Prioritize Critical Risk with Security Copilots AI-Powered Insights Risk leaders must do more than just recognize existing risks—they also need to determine which ones pose the greatest threat to their business. The dashboard provides a consolidated view of AI-related security risks and leverages Security Copilot’s AI-powered insights to help find the most critical risks within an environment. For example, Security Copilot natural language interaction improves agent discovery and categorization, helping leaders identify unmanaged and shadow AI agents to enhance security posture. Furthermore, Security Copilot allows leaders to investigate AI risks and agent activities through prompt-based exploration, putting them in the driver’s seat for additional risk investigation. Drive Risk Mitigation By streamlining risk mitigation recommendations and automated task delegation, organizations can significantly improve the efficiency of their AI risk management processes. This approach can reduce the potential hidden AI risk and accelerate compliance efforts, helping to ensure that risk mitigation is timely and accurate. To address this, the Security Dashboard for AI evaluates how organizations put Microsoft’s AI security features into practice and offers tailored suggestions to strengthen AI security posture. It leverages Microsoft’s productivity tools for immediate action within the practitioner portal, making it easy for administrators to delegate recommendation tasks to designated users. 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, the Security Dashboard for AI is included with eligible Microsoft security products customers already use. If an organization is already using Microsoft security products to secure AI, they are already a Security Dashboard for AI customer. Getting Started Existing Microsoft Security customers can start using Security Dashboard for AI today. It is included when a customer has the Microsoft Security products—Defender, Entra and Purview—with no additional licensing required. To begin using the Security Dashboard for AI, visit http://ai.security.microsoft.com or access the dashboard from the Defender, Entra or Purview portals. Learn more about the Security Dashboard for AI at Microsoft Security MS Learn. 1AuditBoard & Ascend2 Research. The Connected Risk Report: Uniting Teams and Insights to Drive Organizational Resilience. AuditBoard, October 2024. 2Microsoft. 2026 Data Security Index: Unifying Data Protection and AI Innovation. Microsoft Security, 2026Kerberos and the End of RC4: Protocol Hardening and Preparing for CVE‑2026‑20833
CVE-2026-20833 addresses the continued use of the RC4‑HMAC algorithm within the Kerberos protocol in Active Directory environments. Although RC4 has been retained for many years for compatibility with legacy systems, it is now considered cryptographically weak and unsuitable for modern authentication scenarios. As part of the security evolution of Kerberos, Microsoft has initiated a process of progressive protocol hardening, whose objective is to eliminate RC4 as an implicit fallback, establishing AES128 and AES256 as the default and recommended algorithms. This change should not be treated as optional or merely preventive. It represents a structural change in Kerberos behavior that will be progressively enforced through Windows security updates, culminating in a model where RC4 will no longer be implicitly accepted by the KDC. If Active Directory environments maintain service accounts, applications, or systems dependent on RC4, authentication failures may occur after the application of the updates planned for 2026, especially during the enforcement phases introduced starting in April and finalized in July 2026. For this reason, it is essential that organizations proactively identify and eliminate RC4 dependencies, ensuring that accounts, services, and applications are properly configured to use AES128 or AES256 before the definitive changes to Kerberos protocol behavior take effect. Official Microsoft References CVE-2026-25177 - Security Update Guide - Microsoft - Active Directory Domain Services Elevation of Privilege Vulnerability Microsoft Support – How to manage Kerberos KDC usage of RC4 for service account ticket issuance changes related to CVE-2026-20833 (KB 5073381) Microsoft Learn – Detect and Remediate RC4 Usage in Kerberos AskDS – What is going on with RC4 in Kerberos? Beyond RC4 for Windows authentication | Microsoft Windows Server Blog So, you think you’re ready for enforcing AES for Kerberos? | Microsoft Community Hub Risk Associated with the Vulnerability When RC4 is used in Kerberos tickets, an authenticated attacker can request Service Tickets (TGS) for valid SPNs, capture these tickets, and perform offline brute-force attacks, particularly Kerberoasting scenarios, with the goal of recovering service account passwords. Compared to AES, RC4 allows significantly faster cracking, especially for older accounts or accounts with weak passwords. Technical Overview of the Exploitation In simplified terms, the exploitation flow occurs as follows: The attacker requests a TGS for a valid SPN. The KDC issues the ticket using RC4, when that algorithm is still accepted. The ticket is captured and analyzed offline. The service account password is recovered. The compromised account is used for lateral movement or privilege escalation. Official Timeline Defined by Microsoft Important clarification on enforcement behavior Explicit account encryption type configurations continue to be honored even during enforcement mode. The Kerberos hardening associated with CVE‑2026‑20833 focuses on changing the default behavior of the KDC, enforcing AES-only encryption for TGS ticket issuance when no explicit configuration exists. This approach follows the same enforcement model previously applied to Kerberos session keys in earlier security updates (for example, KB5021131 related to CVE‑2022‑37966), representing another step in the progressive removal of RC4 as an implicit fallback. January 2026 – Audit Phase Starting in January 2026, Microsoft initiated the Audit Phase related to changes in RC4 usage within Kerberos, as described in the official guidance associated with CVE-2026-20833. The primary objective of this phase is to allow organizations to identify existing RC4 dependencies before enforcement changes are applied in later phases. During this phase, no functional breakage is expected, as RC4 is still permitted by the KDC. However, additional auditing mechanisms were introduced, providing greater visibility into how Kerberos tickets are issued in the environment. Analysis is primarily based on the following events recorded in the Security Log of Domain Controllers: Event ID 4768 – Kerberos Authentication Service (AS request / Ticket Granting Ticket) Event ID 4769 – Kerberos Service Ticket Operations (Ticket Granting Service – TGS) Additional events related to the KDCSVC service These events allow identification of: the account that requested authentication the requested service or SPN the source host of the request the encryption algorithm used for the ticket and session key This information is critical for detecting scenarios where RC4 is still being implicitly used, enabling operations teams to plan remediation ahead of the enforcement phase. If these events are not being logged on Domain Controllers, it is necessary to verify whether Kerberos auditing is properly enabled. For Kerberos authentication events to be recorded in the Security Log, the corresponding audit policies must be configured. The minimum recommended configuration is to enable Success auditing for the following subcategories: Kerberos Authentication Service Kerberos Service Ticket Operations Verification can be performed directly on a Domain Controller using the following commands: auditpol /get /subcategory:"Kerberos Service Ticket Operations" auditpol /get /subcategory:"Kerberos Authentication Service" In enterprise environments, the recommended approach is to apply this configuration via Group Policy, ensuring consistency across all Domain Controllers. The corresponding policy can be found at: Computer Configuration - Policies - Windows Settings - Security Settings - Advanced Audit Policy Configuration - Audit Policies - Account Logon Once enabled, these audits record events 4768 and 4769 in the Domain Controllers’ Security Log, allowing analysis tools—such as inventory scripts or SIEM/Log Analytics queries—to accurately identify where RC4 is still present in the Kerberos authentication flow. April 2026 – Enforcement with Manual Rollback With the April 2026 update, the KDC begins operating in AES-only mode (0x18) when the msDS-SupportedEncryptionTypes attribute is not defined. This means RC4 is no longer accepted as an implicit fallback. During this phase, applications, accounts, or computers that still implicitly depend on RC4 may start failing. Manual rollback remains possible via explicit configuration of the attribute in Active Directory. July 2026 – Final Enforcement Starting in July 2026, audit mode and rollback options are removed. RC4 will only function if explicitly configured—a practice that is strongly discouraged. This represents the point of no return in the hardening process. Official Monitoring Approach Microsoft provides official scripts in the repository: https://github.com/microsoft/Kerberos-Crypto/tree/main/scripts The two primary scripts used in this analysis are: Get-KerbEncryptionUsage.ps1 The Get-KerbEncryptionUsage.ps1 script, provided by Microsoft in the Kerberos‑Crypto repository, is designed to identify how Kerberos tickets are issued in the environment by analyzing authentication events recorded on Domain Controllers. Data collection is primarily based on: Event ID 4768 – Kerberos Authentication Service (AS‑REQ / TGT issuance) Event ID 4769 – Kerberos Service Ticket Operations (TGS issuance) From these events, the script extracts and consolidates several relevant fields for authentication flow analysis: Time – when the authentication occurred Requestor – IP address or host that initiated the request Source – account that requested the ticket Target – requested service or SPN Type – operation type (AS or TGS) Ticket – algorithm used to encrypt the ticket SessionKey – algorithm used to protect the session key Based on these fields, it becomes possible to objectively identify which algorithms are being used in the environment, both for ticket issuance and session establishment. This visibility is essential for detecting RC4 dependencies in the Kerberos authentication flow, enabling precise identification of which clients, services, or accounts still rely on this legacy algorithm. Example usage: .\Get-KerbEncryptionUsage.ps1 -Encryption RC4 -Searchscope AllKdcs | Export-Csv -Path .\KerbUsage_RC4_All_ThisDC.csv -NoTypeInformation -Encoding UTF8 Data Consolidation and Analysis In enterprise environments, where event volumes may be high, it is recommended to consolidate script results into analytical tools such as Power BI to facilitate visualization and investigation. The presented image illustrates an example dashboard built from collected results, enabling visibility into: Total events analyzed Number of Domain Controllers involved Number of requesting clients (Requestors) Most frequently involved services or SPNs (Targets) Temporal distribution of events RC4 usage scenarios (Ticket, SessionKey, or both) This type of visualization enables rapid identification of RC4 usage patterns, remediation prioritization, and progress tracking as dependencies are eliminated. Additionally, dashboards help answer key operational questions, such as: Which services still depend on RC4 Which clients are negotiating RC4 for sessions Which Domain Controllers are issuing these tickets Whether RC4 usage is decreasing over time This combined automated collection + analytical visualization approach is the recommended strategy to prepare environments for the Microsoft changes related to CVE‑2026‑20833 and the progressive removal of RC4 in Kerberos. Visualizing Results with Power BI To facilitate analysis and monitoring of RC4 usage in Kerberos, it is recommended to consolidate script results into a Power BI analytical dashboard. 1. Install Power BI Desktop Download and install Power BI Desktop from the official Microsoft website 2. Execute data collection After running the Get-KerbEncryptionUsage.ps1 script, save the generated CSV file to the following directory: C:\Temp\Kerberos_KDC_usage_of_RC4_Logs\KerbEncryptionUsage_RC4.csv 3. Open the dashboard in Power BI Open the file RC4-KerbEncryptionUsage-Dashboards.pbix using Power BI Desktop. If you are interested, please leave a comment on this post with your email address, and I will be happy to share with you. 4. Update the data source If the CSV file is located in a different directory, it will be necessary to adjust the data source path in Power BI. As illustrated, the dashboard uses a parameter named CsvFilePath, which defines the path to the collected CSV file. To adjust it: Open Transform Data in Power BI. Locate the CsvFilePath parameter in the list of Queries. Update the value to the directory where the CSV file was saved. Click Refresh Preview or Refresh to update the data. Click Home → Close & Apply. This approach allows rapid identification of RC4 dependencies, prioritization of remediation actions, and tracking of progress throughout the elimination process. List-AccountKeys.ps1 This script is used to identify which long-term keys are present on user, computer, and service accounts, enabling verification of whether RC4 is still required or whether AES128/AES256 keys are already available. Interpreting Observed Scenarios Microsoft recommends analyzing RC4 usage by jointly considering two key fields present in Kerberos events: Ticket Encryption Type Session Encryption Type Each combination represents a distinct Kerberos behavior, indicating the source of the issue, risk level, and remediation point in the environment. In addition to events 4768 and 4769, updates released starting January 13, 2026, introduce new Kdcsvc events in the System Event Log that assist in identifying RC4 dependencies ahead of enforcement. These events include: Event ID 201 – RC4 usage detected because the client advertises only RC4 and the service does not have msDS-SupportedEncryptionTypes defined. Event ID 202 – RC4 usage detected because the service account does not have AES keys and the msDS-SupportedEncryptionTypes attribute is not defined. Event ID 203 – RC4 usage blocked (enforcement phase) because the client advertises only RC4 and the service does not have msDS-SupportedEncryptionTypes defined. Event ID 204 – RC4 usage blocked (enforcement phase) because the service account does not have AES keys and msDS-SupportedEncryptionTypes is not defined. Event ID 205 – Detection of explicit enablement of insecure algorithms (such as RC4) in the domain policy DefaultDomainSupportedEncTypes. Event ID 206 – RC4 usage detected because the service accepts only AES, but the client does not advertise AES support. Event ID 207 – RC4 usage detected because the service is configured for AES, but the service account does not have AES keys. Event ID 208 – RC4 usage blocked (enforcement phase) because the service accepts only AES and the client does not advertise AES support. Event ID 209 – RC4 usage blocked (enforcement phase) because the service accepts only AES, but the service account does not have AES keys. https://support.microsoft.com/en-gb/topic/how-to-manage-kerberos-kdc-usage-of-rc4-for-service-account-ticket-issuance-changes-related-to-cve-2026-20833-1ebcda33-720a-4da8-93c1-b0496e1910dc They indicate situations where RC4 usage will be blocked in future phases, allowing early detection of configuration issues in clients, services, or accounts. These events are logged under: Log: System Source: Kdcsvc Below are the primary scenarios observed during the analysis of Kerberos authentication behavior, highlighting how RC4 usage manifests across different ticket and session encryption combinations. Each scenario represents a distinct risk profile and indicates specific remediation actions required to ensure compliance with the upcoming enforcement phases. Scenario A – RC4 / RC4 In this scenario, both the Kerberos ticket and the session key are issued using RC4. This is the worst possible scenario from a security and compatibility perspective, as it indicates full and explicit dependence on RC4 in the authentication flow. This condition significantly increases exposure to Kerberoasting attacks, since RC4‑encrypted tickets can be subjected to offline brute-force attacks to recover service account passwords. In addition, environments remaining in this state have a high probability of authentication failure after the April 2026 updates, when RC4 will no longer be accepted as an implicit fallback by the KDC. Events Associated with This Scenario During the Audit Phase, this scenario is typically associated with: Event ID 201 – Kdcsvc Indicates that: the client advertises only RC4 the service does not have msDS-SupportedEncryptionTypes defined the Domain Controller does not have DefaultDomainSupportedEncTypes defined This means RC4 is being used implicitly. This event indicates that the authentication will fail during the enforcement phase. Event ID 202 – Kdcsvc Indicates that: the service account does not have AES keys the service does not have msDS-SupportedEncryptionTypes defined This typically occurs when: legacy accounts have never had their passwords reset only RC4 keys exist in Active Directory Possible Causes Common causes include: the originating client (Requestor) advertises only RC4 the target service (Target) is not explicitly configured to support AES the account has only legacy RC4 keys the msDS-SupportedEncryptionTypes attribute is not defined Recommended Actions To remediate this scenario: Correctly identify the object involved in the authentication flow, typically: a service account (SPN) a computer account or a Domain Controller computer object Verify whether the object has AES keys available using analysis tools or scripts such as List-AccountKeys.ps1. If AES keys are not present, reset the account password, forcing generation of modern cryptographic keys (AES128 and AES256). Explicitly define the msDS-SupportedEncryptionTypes attribute to enable AES support. Recommended value for modern environments: 0x18 (AES128 + AES256) = 24 As illustrated below, this configuration can be applied directly to the msDS-SupportedEncryptionTypes attribute in Active Directory. AES can also be enabled via Active Directory Users and Computers by explicitly selecting: This account supports Kerberos AES 128 bit encryption This account supports Kerberos AES 256 bit encryption These options ensure that new Kerberos tickets are issued using AES algorithms instead of RC4. Temporary RC4 Usage (Controlled Rollback) In transitional scenarios—during migration or troubleshooting—it may be acceptable to temporarily use: 0x1C (RC4 + AES) = 28 This configuration allows the object to accept both RC4 and AES simultaneously, functioning as a controlled rollback while legacy dependencies are identified and corrected. However, the final objective must be to fully eliminate RC4 before the final enforcement phase in July 2026, ensuring the environment operates exclusively with AES128 and AES256. Scenario B – AES / RC4 In this case, the ticket is protected with AES, but the session is still negotiated using RC4. This typically indicates a client limitation, legacy configuration, or restricted advertisement of supported algorithms. Events Associated with This Scenario During the Audit Phase, this scenario may generate: Event ID 206 Indicates that: the service accepts only AES the client does not advertise AES in the Advertised Etypes In this case, the client is the issue. Recommended Action Investigate the Requestor Validate operating system, client type, and advertised algorithms Review legacy GPOs, hardening configurations, or settings that still force RC4 For Linux clients or third‑party applications, review krb5.conf, keytabs, and Kerberos libraries Scenario C – RC4 / AES Here, the session already uses AES, but the ticket is still issued using RC4. This indicates an implicit RC4 dependency on the Target or KDC side, and the environment may fail once enforcement begins. Events Associated with This Scenario This scenario may generate: Event ID 205 Indicates that the domain has explicit insecure algorithm configuration in: DefaultDomainSupportedEncTypes This means RC4 is explicitly allowed at the domain level. Recommended Action Correct the Target object Explicitly define msDS-SupportedEncryptionTypes with 0x18 = 24 Revalidate new ticket issuance to confirm full migration to AES / AES Conclusion CVE‑2026‑20833 represents a structural change in Kerberos behavior within Active Directory environments. Proper monitoring is essential before April 2026, and the msDS-SupportedEncryptionTypes attribute becomes the primary control point for service accounts, computer accounts, and Domain Controllers. July 2026 represents the final enforcement point, after which there will be no implicit rollback to RC4.Security Community Spotlight: Luca Romero Arrieche Heller
Meet Luca, Modern Workplace and Cloud Consultant at SoftwareOne Iberia, a Microsoft Partner. Luca has been working with Microsoft Security and cloud technologies for over a decade, closely following the evolution of the Microsoft Security ecosystem. Today, Luca focuses on Modern Work and security transformation projects, including large-scale Microsoft 365 migrations, enterprise messaging modernization with Exchange Online, endpoint management deployments with Microsoft Intune, and identity-driven security architectures across Microsoft environments. In addition to implementation projects, Luca also delivers technical workshops focused on threat protection and Microsoft security technologies, helping organizations better understand and implement solutions such as Microsoft Defender XDR, Microsoft Entra ID, endpoint security, and Zero Trust strategies to strengthen their overall security posture. Here’s what Luca had to say about his winding road through Microsoft Security and its Community. All responses are quotes from Luca. Microsoft Security Community How would you describe your Microsoft Security Community involvement or advocacy, globally and/or locally? When did you begin? My involvement with the Microsoft Community began early in my career through regional Microsoft community and influencer programs in Brazil. During that time, I became involved with Microsoft Virtual Academy (MVA) and started writing security-focused technical articles based on real project experience. My early technical journey began working with on-premises technologies such as ISA Server, Exchange Server, and Active Directory, which provided a strong foundation in Microsoft infrastructure and security. Through community participation and my blog, I began documenting real-world implementations and lessons learned related to Microsoft Security and cloud technologies. Over the years, my professional work has remained closely connected to the Microsoft ecosystem, implementing technologies such as Advanced Threat Analytics (ATA), Advanced Threat Protection (ATP), Microsoft Defender XDR, Microsoft Entra ID, and Microsoft Intune in enterprise environments. Today, my community advocacy is strongly connected to real-world experience, focusing on Zero Trust architectures, identity protection, modern endpoint security, and large-scale Microsoft 365 transformations and migrations. I noticed you’ve also answered a number of questions and have helped provide solutions in Microsoft Tech Community forums. How did you come across this and what inspired you to help? I have always been encouraged to participate in the technical community and share knowledge. Since the early days of TechNet, I have been involved in learning from others and contributing whenever possible. The culture of collaboration within the Microsoft ecosystem played an important role in my professional development. Many of the challenges I faced early in my career were solved thanks to the knowledge shared by the community. Because of that, contributing back feels natural. In the Microsoft Security Tech Community forums, I often see questions that are very similar to challenges I face in my daily work as a consultant. Sharing my experience becomes a practical way to help others navigate similar situations. Experience is important not only for solving problems, but also for knowing where to look and how to approach a solution. When I see questions without answers or clear guidance, I try to contribute by sharing practical insights, troubleshooting approaches, and real-world solutions. What do you find most rewarding about being a member of the Microsoft Security Community? What I find most rewarding is knowing that the community played a direct role in shaping my professional journey. Early in my career, I learned extensively through forums, technical discussions, and shared knowledge. That collaborative environment enabled me to grow into increasingly complex enterprise projects. Over the years, I have followed the evolution of Microsoft Security solutions... the community has always been part of that journey. Today, being able to contribute insights gained from large-scale security architectures, identity modernization, and enterprise Microsoft 365 migrations is my way of giving back. Additionally, as a founding member of Microsoft Virtual Academy, I published security-focused technical articles and created my blog to document real-world implementations, always referencing sources and applied knowledge. Speaking of Microsoft Security solutions...which feature or product has provided the most impact? How has it helped you or your customers? The combination of Entra ID Protection with Conditional Access and the unified visibility of Defender XDR (are the Microsoft Security products that have) delivered the greatest impact by reducing compromised credential risks and accelerating incident response through identity, endpoint, and cloud workload correlation. Back to the Microsoft Community- what advice do you have for others who would like to get involved? My advice is simple: start by learning, then share what you have genuinely implemented in practice. The community values real-world experience, technical honesty, and genuine collaboration. It’s not about visibility — it’s about adding value. Be consistent, support others, and document your journey. Impact follows naturally. Linking up with Luca Do you have anything you’d like to promote or recommend? I recommend diving deeper into Intune, Defender, and Exchange Online, especially focusing on the integration between identity, endpoint protection, and email security within a well-structured Zero Trust Where can people get in touch with you or follow your content? LinkedIn: https://www.linkedin.com/in/lucarheller GitHub: https://github.com/LucaARHeller Blog: https://lucaheller.wordpress.com/ Microsoft Tech Community: LucaHeller Please share anything else essential to you. Before thinking about advanced security tools, it is essential to understand how the underlying technologies work. Whether it is something simple like DNS resolution, how authentication flows operate, or how policies are applied across enterprise environments, these foundational concepts are what allow security architectures to be built correctly. For me, combining strong technical fundamentals with modern security technologies and real-world implementation experience is what enables organizations to build secure and resilient Microsoft environments. Luca’s story is a strong reminder of what makes the Microsoft Security Community thrive: practical contributions grounded in real-world experience. Through training, documenting, and showing up to help others, Luca demonstrates how continuous learning and compassion can benefit everyone. The community is better for his continued involvement, and his journey is an invitation for others to participate, share what they’ve learned, and keep strengthening security together. __________________________________________________________________________________________________________________________________________________________________ Learn and Engage with the Microsoft Security Community Log in and follow this Microsoft Security Community Blog. Follow = Click the heart in the upper right when you're logged in 🤍. Join the Microsoft Security Community and be notified of upcoming events, product feedback surveys, and more. Get early access to Microsoft Security products and provide feedback to engineers by joining the Microsoft Security Advisors. Join the Microsoft Security Community LinkedIn Group and follow the Microsoft Entra Community on LinkedIn.Security Copilot Skilling Series
Security Copilot joins forces with your favorite Microsoft Security products in a skilling series miles above the rest. The Security Copilot Skilling Series is your opportunity to strengthen your security posture through threat detection, incident response, and leveraging AI for security automation. These technical skilling sessions are delivered live by experts from our product engineering teams. Come ready to learn, engage with your peers, ask questions, and provide feedback. Upcoming sessions are noted below and will be available on-demand on the Microsoft Security Community YouTube channel. Coming Up Apr. 2 | Current capabilities of Copilot in Intune This session on Copilot in Intune & Agents explores the current embedded Copilot experiences and AI‑powered agents available through Security Copilot in Microsoft Intune. Attendees will learn how these capabilities streamline administrative workflows, reduce manual effort, and accelerate everyday endpoint management tasks, helping organizations modernize how they operate and manage devices at scale. Apr. 16 | Security Copilot Agents, DSPM AI Observability, and IRM for Agents This session covers an overview of how Microsoft Purview supports AI risk visibility and investigation through Data Security Posture Management (DSPM) and Insider Risk Management (IRM), alongside Security Copilot–powered agents. This session will go over what is AI Observability in DSPM as well as IRM for Agents in Copilot Studio and Azure AI Foundry. Attendees will learn about the IRM Triage Agent and DSPM Posture Agent and their deployment. Attendees will gain an understanding of how DSPM and IRM capabilities could be leveraged to improve visibility, context, and response for AI-related data risks in Microsoft Purview. Now On-Demand March 5 | Conditional Access Optimization Agent: What It Is & Why It Matters Get a clear, practical look at the Conditional Access Optimization Agent—how it automates policy upkeep, simplifies operations, and uses new post‑Ignite updates like Agent Identity and dashboards to deliver smarter, standards‑aligned recommendations. February 19 | Agents That Actually Work: From an MVP Speaker: Ugur Koc, Microsoft MVP Microsoft MVP Ugur Koc will share a real-world workflow for building agents in Security Copilot, showing how to move from an initial idea to a consistently performing agent. The session highlights how to iterate on objectives, tighten instructions, select the right tools, and diagnose where agents break or drift from expected behavior. Attendees will see practical testing and validation techniques, including how to review agent decisions and fine-tune based on evidence rather than intuition to help determine whether an agent is production ready. February 5 | Identity Risk Management in Microsoft Entra Speaker: Marilee Turscak Identity teams face a constant stream of risky user signals, and determining which threats require action can be time‑consuming. This webinar explores the Identity Risk Management Agent in Microsoft Entra, powered by Security Copilot, and how it continuously monitors risky identities, analyzes correlated sign‑in and behavior signals, and explains why a user is considered risky. Attendees will see how the agent provides guided remediation recommendations—such as password resets or risk dismissal—at scale and supports natural‑language interaction for faster investigations. The session also covers how the agent learns from administrator instructions to apply consistent, policy‑aligned responses over time. January 28 | Security Copilot in Purview Technical Deep Dive Speakers: Patrick David, Thao Phan, Alexandra Roland Discover how AI-powered alert triage agents for Data Loss Prevention (DLP) and Insider Risk Management (IRM) are transforming incident response and compliance workflows. Explore new Data Security Posture Management (DSPM) capabilities that deliver deeper insights and automation to strengthen your security posture. This session will showcase real-world scenarios and actionable strategies to help you protect sensitive data and simplify compliance. January 22 | Security Copilot Skilling Series | Building Custom Agents: Unlocking Context, Automation, and Scale Speakers: Innocent Wafula, Sean Wesonga, and Sebuh Haileleul Microsoft Security Copilot already features a robust ecosystem of first-party and partner-built agents, but some scenarios require solutions tailored to your organization’s specific needs and context. In this session, you'll learn how the Security Copilot agent builder platform and MCP servers empower you to create tailored agents that provide context-aware reasoning and enterprise-scale solutions for your unique scenarios. December 18 | What's New in Security Copilot for Defender Speaker: Doug Helton Discover the latest innovations in Microsoft Security Copilot embedded in Defender that are transforming how organizations detect, investigate, and respond to threats. This session will showcase powerful new capabilities—like AI-driven incident response, contextual insights, and automated workflows—that help security teams stop attacks faster and simplify operations. Why Attend: Stay Ahead of Threats: Learn how cutting-edge AI features accelerate detection and remediation. Boost Efficiency: See how automation reduces manual effort and improves SOC productivity. Get Expert Insights: Hear directly from product leaders and explore real-world use cases. Don’t miss this opportunity to future-proof your security strategy and unlock the full potential of Security Copilot in Defender! December 4 | Discussion of Ignite Announcements Speakers: Zineb Takafi, Mike Danoski and Oluchi Chukwunwere, Priyanka Tyagi, Diana Vicezar, Thao Phan, Alex Roland, and Doug Helton Ignite 2025 is all about driving impact in the era of AI—and security is at the center of it. In this session, we’ll unpack the biggest Security Copilot announcements from Ignite on agents and discuss how Copilot capabilities across Intune, Entra, Purview, and Defender deliver end-to-end protection. November 13 | Microsoft Entra AI: Unlocking Identity Intelligence with Security Copilot Skills and Agents Speakers: Mamta Kumar, Sr. Product Manager; Margaret Garcia Fani, Sr. Product Manager This session will demonstrate how Security Copilot in Microsoft Entra transforms identity security by introducing intelligent, autonomous capabilities that streamline operations and elevate protection. Customers will discover how to leverage AI-driven tools to optimize conditional access, automate access reviews, and proactively manage identity and application risks - empowering them into a more secure, and efficient digital future. October 30 | What's New in Copilot in Microsoft Intune Speaker: Amit Ghodke, Principal PM Architect, CxE CAT MEM Join us to learn about the latest Security Copilot capabilities in Microsoft Intune. We will discuss what's new and how you can supercharge your endpoint management experience with the new AI capabilities in Intune. October 16 | What’s New in Copilot in Microsoft Purview Speaker: Patrick David, Principal Product Manager, CxE CAT Compliance Join us for an insider’s look at the latest innovations in Microsoft Purview —where alert triage agents for DLP and IRM are transforming how we respond to sensitive data risks and improve investigation depth and speed. We’ll also dive into powerful new capabilities in Data Security Posture Management (DSPM) with Security Copilot, designed to supercharge your security insights and automation. Whether you're driving compliance or defending data, this session will give you the edge. October 9 | When to Use Logic Apps vs. Security Copilot Agents Speaker: Shiv Patel, Sr. Product Manager, Security Copilot Explore how to scale automation in security operations by comparing the use cases and capabilities of Logic Apps and Security Copilot Agents. This webinar highlights when to leverage Logic Apps for orchestrated workflows and when Security Copilot Agents offer more adaptive, AI-driven responses to complex security scenarios. All sessions will be published to the Microsoft Security Community YouTube channel - Security Copilot Skilling Series Playlist __________________________________________________________________________________________________________________________________________________________________ Looking for more? Keep up on the latest information on the Security Copilot Blog. Join the Microsoft Security Community mailing list to stay up to date on the latest product news and events. Engage with your peers one of our Microsoft Security discussion spaces.Authorization and Identity Governance Inside AI Agents
Designing Authorization‑Aware AI Agents Enforcing Microsoft Entra ID RBAC in Copilot Studio As AI agents move from experimentation to enterprise execution, authorization becomes the defining line between innovation and risk. AI agents are rapidly evolving from experimental assistants into enterprise operators—retrieving user data, triggering workflows, and invoking protected APIs. While many early implementations rely on prompt‑level instructions to control access, regulated enterprise environments require authorization to be enforced by identity systems, not language models. This article presents a production‑ready, identity‑first architecture for building authorization‑aware AI agents using Copilot Studio, Power Automate, Microsoft Entra ID, and Microsoft Graph, ensuring every agent action executes strictly within the requesting user’s permissions. Why Prompt‑Level Security Is Not Enough Large Language Models interpret intent—they do not enforce policy. Even the most carefully written prompts cannot: Validate Microsoft Entra ID group or role membership Reliably distinguish delegated user identity from application identity Enforce deterministic access decisions Produce auditable authorization outcomes Relying on prompts for authorization introduces silent security failures, over‑privileged access, and compliance gaps—particularly in Financial Services, Healthcare, and other regulated industries. Authorization is not a reasoning problem. It is an identity enforcement problem. Common Authorization Anti‑Patterns in AI Agents The following patterns frequently appear in early AI agent implementations and should be avoided in enterprise environments: Hard‑coded role or group checks embedded in prompts Trusting group names passed as plain‑text parameters Using application permissions for user‑initiated actions Skipping verification of the user’s Entra ID identity Lacking an auditable authorization decision point These approaches may work in demos, but they do not survive security reviews, compliance audits, or real‑world misuse scenarios. Authorization‑Aware Agent Architecture In an authorization‑aware design, the agent never decides access. Authorization is enforced externally, by identity‑aware workflows that sit outside the language model’s reasoning boundary. High‑Level Flow The Copilot Studio agent receives a user request The agent passes the User Principal Name (UPN) and intended action A Power Automate flow validates permissions using Microsoft Entra ID via Microsoft Graph Only authorized requests are allowed to proceed Unauthorized requests fail fast with a deterministic outcome Authorization‑aware Copilot Studio architecture enforces Entra ID RBAC before executing any business action. The agent orchestrates intent. Identity systems enforce access. Enforcing Entra ID RBAC with Microsoft Graph Power Automate acts as the authorization enforcement layer: Resolve user identity from the supplied UPN Retrieve group or role memberships using Microsoft Graph Normalize and compare memberships against approved RBAC groups Explicitly deny execution when authorization fails This keeps authorization logic: Centralized Deterministic Auditable Independent of the AI model Reference Implementation: Power Automate RBAC Enforcement Flow The following import‑ready Power Automate cloud flow demonstrates a secure RBAC enforcement pattern for Copilot Studio agents. It validates Microsoft Entra ID group membership before allowing any business action. Scenario Trigger: User‑initiated agent action Identity model: Delegated user identity Input: userUPN, requestedAction Outcome: Authorized or denied based on Entra ID RBAC { "$schema": "https://schema.management.azure.com/providers/Microsoft.Logic/schemas/2016-06-01/workflowdefinition.json#", "contentVersion": "1.0.0.0", "triggers": { "Copilot_Request": { "type": "Request", "kind": "Http", "inputs": { "schema": { "type": "object", "properties": { "userUPN": { "type": "string" }, "requestedAction": { "type": "string" } }, "required": [ "userUPN" ] } } } }, "actions": { "Get_User_Groups": { "type": "Http", "inputs": { "method": "GET", "uri": "https://graph.microsoft.com/v1.0/users/@{triggerBody()?['userUPN']}/memberOf?$select=displayName", "authentication": { "type": "ManagedServiceIdentity" } } }, "Normalize_Group_Names": { "type": "Select", "inputs": { "from": "@body('Get_User_Groups')?['value']", "select": { "groupName": "@toLower(item()?['displayName'])" } }, "runAfter": { "Get_User_Groups": [ "Succeeded" ] } }, "Check_Authorization": { "type": "Condition", "expression": "@contains(body('Normalize_Group_Names'), 'ai-authorized-users')", "runAfter": { "Normalize_Group_Names": [ "Succeeded" ] }, "actions": { "Authorized_Action": { "type": "Compose", "inputs": "User authorized via Entra ID RBAC" } }, "else": { "actions": { "Access_Denied": { "type": "Terminate", "inputs": { "status": "Failed", "message": "Access denied. User not authorized via Entra ID RBAC." } } } } } } } This pattern enforces authorization outside the agent, aligns with Zero Trust principles, and creates a clear audit boundary suitable for enterprise and regulated environments. Flow Diagram: Agent Integrated with RBAC Authorization Flow and Sample Prompt Execution: Delegated vs Application Permissions Scenario Recommended Permission Model User‑initiated agent actions Delegated permissions Background or system automation Application permissions Using delegated permissions ensures agent execution remains strictly within the requesting user’s identity boundary. Auditing and Compliance Benefits Deterministic and explainable authorization decisions Centralized enforcement aligned with identity governance Clear audit trails for security and compliance reviews Readiness for SOC, ISO, PCI, and FSI assessments Enterprise Security Takeaways Authorization belongs in Microsoft Entra ID, not prompts AI agents must respect enterprise identity boundaries Copilot Studio + Power Automate + Microsoft Graph enable secure‑by‑design AI agents By treating AI agents as first‑class enterprise actors and enforcing authorization at the identity layer, organizations can scale AI adoption with confidence, trust, and compliance.
Moving Microsoft 365 authentication to Entra ID Cloud Auth from On-Prem ADFS
Hi Identity Brain Trust, Assuming this would be the right place for my question as I couldn't find any other hub more relevant for this one. We have several applications configured to be authenticated via ADFS. We are looking to move these gradually to Entra ID Cloud auth and decommission ADFS, eventually. I would like to test out how Microsoft 365 can be moved to Cloud Auth from ADFS for a certain group of people. I have tried to use ADFS migration wizard in Entra but 365 app is not showing in the ADFS Application Migration section of Entra ID. I've read this official guide but still couldn't find how this can be manually done when App Migration section won't have the app appearing there. - https://learn.microsoft.com/en-us/entra/identity/enterprise-apps/migrate-ad-fs-application-overview Appreciate any of your inputs on this one! Kev
MFA Issue blocks Global Admin / Data Protection Team disconnects calls
Hi. I have just learned that the Microsoft Authenticator app allows you to create MFA for multiple Global Administrator accounts, but those accounts will not properly transfer when you move to a new Smartphone. I have one tenant that has only one Global Admin Account secured using MFA and the Microsoft Authenticator App. The MFA is no longer working. I have been told to work with the Microsoft Data Protection Team by calling them at 800-865-9408. The weird thing is they keep disconnecting the call before the issue gets addressed. It has happened multiple times. Calling them back results in hold times averaging over 2 hours. Does anyone have ideas how I can get my MFA issue solved perhaps by reaching the proper group at Microsoft in another fashion? Is there some customer advocate resource at Microsoft I can contact?Fake Employees, Real Threat: Decentralized Identity to combat Deepfake Hiring?
In recent months, cybersecurity experts have sounded the alarm on a surge of fake “employees” – job candidates who are not who they claim to be. These fraudsters use everything from fabricated CVs and stolen identities to AI-generated deepfake videos in interviews to land jobs under false pretenses. It’s a global phenomenon making headlines on LinkedIn and in the press. With the topic surfacing everywhere, I wanted to take a closer look at what’s really going on — and explore the solutions that could help organizations respond to this growing challenge. And as it happens, one solution is finally reaching maturity at exactly the right moment: decentralized identity. Let me walk you through it. But first, let’s look at a few troubling facts: Even tech giants aren’t immune. Amazon’s Chief Security Officer revealed that since April 2024 the company has blocked over 1,800 suspected North Korean scammers from getting hired, and that the volume of such fake applicants jumped 27% each quarter this year (1.1). In fact, a coordinated scheme involving North Korean IT operatives posing as remote workers has infiltrated over 300 U.S. companies since 2020, generating at least $6.8 million in revenue for the regime (2.1). CrowdStrike also reported more than 320 confirmed incidents in the past year alone, marking a 220% surge in activity (2.2). And it’s not just North Korea: organised crime groups globally are adopting similar tactics. This trend is not a small blip; it’s likely a sign of things to come. Gartner predicts that by 2028, one in four job applicant profiles could be fake in some way (3). Think about that – in a few years, 25% of the people applying to your jobs might be bots or impostors trying to trick their way in. We’re not just talking about exaggerated resumes; we’re talking about full-scale deception: people hiring stand-ins for interviews, AI bots filling out assessments, and deepfake avatars smiling through video calls. It’s a hiring manager’s nightmare — no one wants to waste time interviewing bots or deepfakes — and a CISO’s worst-case scenario rolled into one. The Rise of the Deepfake Employee What does a “fake employee” actually do? In many cases, these impostors are part of organized schemes (even state-sponsored) to steal money or data. They might forge impressive résumés and create a minimal but believable online presence. During remote interviews, some have been caught using deepfake video filters – basically digital masks – to appear as someone else. In one case, Amazon investigators noticed an interviewee’s typing did not sync with the on-screen video (the keystrokes had a 110ms lag); it turned out to be a North Korean hacker remotely controlling a fake persona on the video call (1.2). Others refuse video entirely, claiming technical issues, so you only hear a voice. Some even hire proxy interviewees – a real person who interviews in their place. The level of creativity is frightening. Once inside, a fake employee can do serious damage. They gain legitimate access to internal systems, data, and tools. Some have stolen sensitive source code and threatened to leak it unless the company paid a ransom (1). Others quietly set up backdoor access for future cyberattacks. And as noted, if they’re part of a nation-state operation, the salary you pay them is funding adversaries. The U.S. Department of Justice recently warned that many North Korean IT workers send the majority of their pay back to the regime’s illicit weapons programs (1)(2.3). Beyond the financial angle, think of the security breach: a malicious actor is now an “insider” with an access badge. No sector is safe. While tech companies with lots of remote jobs were the first targets, the scam has expanded. According to the World Economic Forum, about half of the companies targeted by these attacks aren’t in the tech industry at all (4). Financial services, healthcare, media, energy – any business that hires remote freelancers or IT staff could be at risk. Many Fortune 500 firms have quietly admitted to Charles Carmakal (Chief Technology Officer at Google Cloud’s Mandiant) that they’ve encountered fake candidates (2.3). Brandon Wales — former Executive Director of the Cybersecurity and Infrastructure Security Agency (CISA) and now VP of Cybersecurity Strategy at SentinelOne — warned that the “scale and speed” of these operations is unlike anything seen before (2.3). Rivka Little, Chief Growth Officer at Socure, put it bluntly: “Every Fortune 100 and potentially Fortune 500 has a pretty high number of risky employees on their books” right now (1). If you’re in charge of security or IT, this should send a chill down your spine. How do you defend against an attack that walks in through your front door (virtually) with HR’s approval? It calls for rethinking some fundamental practices, which leads us to the biggest gap these scams have exposed: identity verification in the hiring process. The Identity Verification Gap in Hiring Let’s face it: traditional hiring and onboarding operate on a lot of trust. You collect a résumé, maybe call some references, do a background check that might catch a criminal record but won’t catch a well-crafted fake identity. You might ask for a copy of a driver’s license or passport to satisfy HR paperwork, but how thoroughly is it checked? And once the person is hired and given an employee account, how often do we re-confirm that person’s identity in the months or years that follow? Almost never. Now let’s look at the situation from the reverse perspective: During your last recruitment, or when you became a new vendor for a client, were you asked to send over a full copy of your ID via email? Most likely, yes. You send a scan of your passport or ID card to an HR representative or a partner’s portal, and you have no idea where that image gets stored, who can see it, or how long it will sit around. It feels uncomfortable, but we do it because we need to prove who we are. In reality, we’re making a leap of faith that the process is secure. This is the identity verification gap. Companies are trusting documents and self-assertions that can be forged, and they rarely have a way to verify those beyond a cursory glance. Fraudsters exploit this gap mercilessly. They provide fake documents that look real, or steal someone else’s identity details to pass background checks. Once they’ve cleared that initial hurdle, the organization treats them as legit. IT sets up accounts, security gives them access, and from then on the “user identity” is assumed to be genuine. Forever. Moreover, once an employee is on board, internal processes often default to trust. Need a password reset? The helpdesk might ask for your birthdate or employee ID – pieces of info a savvy attacker can learn or steal. We don’t usually ask an employee who calls IT to re-prove that they are the same person HR hired months or years ago. All of this stands in contrast to the principle of Zero Trust security that many companies are now adopting. Thanks to John Kindervag (Forrester, 2009), Zero Trust says “never trust, always verify” each access request. But how can you verify if the underlying identity was fake to start with? As part of Microsoft, we often say that “identity is the new perimeter” – meaning the primary defense line is verifying identities, not just securing network walls. If that identity perimeter is built on shaky ground (unverified people), the whole security model is weak. So, what can be done? Security leaders and even the World Economic Forum are advocating for stronger identity proofing in hiring. The WEF specifically recommends “verifiable government ID checks at multiple stages of recruitment and into employment” (4). In other words, don’t just verify once and forget it – verify early, verify often. That might mean an ID and background check when offering the job, another verification during onboarding, and perhaps periodic re-checks or at least on certain events (like when the employee requests elevated privileges). Amazon’s CSO, S. Schmidt, echoed this after battling North Korean fakes; he advised companies to “Implement identity verification at multiple hiring stages and monitor for anomalous technical behavior” as a key defense (1). Of course, doing this manually is tough. You can’t very well ask each candidate to fly in their first day just to show their passport in person, especially with global and remote workforces. That’s where technology is stepping up. Enter the world of Verified ID and decentralized identity. Enter Microsoft Entra Verified ID: proving Identity, not just Checking a Box Imagine if, instead of emailing copies of your passport to every new employer or partner, you could carry a digital identity credential that is already verified and can be trusted by others instantly. That’s the idea behind Microsoft Entra Verified ID. It’s essentially a system for issuing and verifying cryptographically-secure digital identity credentials. Let’s break down what that means in plain terms. At its core, a Verified ID credential is like a digital ID card that lives in an app on your phone. But unlike a photocopy of your driver’s license (which anyone could copy, steal or tamper with), this digital credential is signed with cryptographic keys that make it tamper-proof and verifiable. It’s based on open standards. Microsoft has been heavily involved in the development of Decentralized Identifiers (DID) and W3C Verifiable Credentials standards over the past few years (7). The benefit of standards is that this isn’t a proprietary Microsoft-only thing – it’s part of a broader move toward decentralized identity, where the user is in control of their own credentials. Here’s a real-life analogy: When you go to a bar and need to prove you’re over 18, you show your driver’s license, National ID or Passport. The bouncer checks your birth date and maybe the hologram, but they don’t photocopy your entire ID and keep it; they just verify it and hand it back. You remain in possession of your ID. Now translate that to digital interactions: with Verified ID, you could have a credential on your phone that says “Government ID verified: [Your Name], age 25”. When a verifier (like an employer or service) needs proof, you share that credential through a secure app. The verifier’s system checks the credential’s digital signature to confirm it was issued by a trusted authority (for example, a background check company or a government agency) and that it hasn’t been altered. You don’t have to send over a scan of your actual passport or reveal extra info like your full birthdate or address – the credential can be designed to reveal only the necessary facts (e.g. “is over 18” = yes). This concept is called selective disclosure, and it’s a big win for privacy. Crucially, you decide which credentials to share and with whom. You might have one that proves your legal name and age (from a government issuer), another that proves your employment status (from your employer), another that proves a certification or degree (from a university). And you only share them when needed. They can also have expiration dates or be revoked. For instance, an employment credential could automatically expire when you leave the company. This means if someone tries to use an old credential, it would fail verification – another useful security feature. Now, how do these credentials get issued in the first place? This is where the integration of our Microsoft Partner IDEMIA comes in, which was a highlight of Microsoft Ignite 2025. IDEMIA is a company you might not have heard of, but they’re a huge player in the identity world – they’re the folks behind many government ID and biometric systems (think passport chips, national ID programs, biometric border control, etc.). Microsoft announced that Entra Verified ID now integrate IDEMIA’s identity verification services. In practice, this means when you need a high-assurance credential (like proving your real identity for a job), the system can invoke IDEMIA to do a thorough check. For example, as part of a remote onboarding process, an employer using Verified ID could ask the new hire to verify their identity through IDEMIA. The new hire gets a link or prompt, and is guided to scan their official government ID and take a live selfie video. IDEMIA’s system checks that the ID is authentic (not a forgery) and matches the person’s face, doing so in a privacy-protecting way (for instance, biometric data might be used momentarily to match and then not stored long-term, depending on the service policies). This process confirms “Yes, this is Alice, and we’ve confirmed her identity with a passport and live face check.” At that point, Microsoft Entra Verified ID can issue a credential to Alice, such as “Alice – identity verified by Contoso Corp on [Date]”. Alice stores this credential in her digital wallet (for instance, the Microsoft Authenticator app). Now Alice can present that credential to apps or IT systems to prove it’s really Alice. The employer might require it to activate her accounts, or later if Alice calls IT support, they might ask her to present the credential to prove her identity for a password reset. The verification of the credential is cryptographically secure and instantaneous – the IT system just checks the digital signature. There’s no need to manually pull up Alice’s passport scan from HR files or interrogate her with personal questions. Plus, Alice isn’t repeatedly sending sensitive personal documents; she shared them once with a trusted verifier (IDEMIA via the Verified ID app flow), not with every individual who asks for ID. This reduces the exposure of her personal data. From the company’s perspective, this approach dramatically improves security and streamlines processes. During onboarding, it’s actually faster to have someone go through an automated ID verification flow than to coordinate an in-person verification or trust slow manual checks. Organizations also avoid collecting and storing piles of personal documents, which is a compliance headache and a breach risk. Instead, they get a cryptographic assurance. Think of it like the difference between keeping copies of everyone’s credit card versus using a payment token – the latter is safer and just as effective for the transaction. Microsoft has been laying the groundwork for this for years. Back in 2020 (and even 2017....), Microsoft discussed decentralized identity concepts where users own their identity data and apps verify facts about you through digital attestations (7). Now it’s reality: Entra Verified ID uses those open standards (DID and Verifiable Credentials) under the hood. Plus, the integration with IDEMIA and others means it’s not just theoretical — it’s operational and scalable. As Ankur Patel, one of our product leaders for Microsoft Entra, said about these integrations: it enables “high assurance verification without custom business contracts or technical implementations” (6). In other words, companies can now easily plug this capability in, rather than building their own verification processes from scratch. Before moving on, let’s not forget to include the promised quote from IDEMIA’s exec that really underscores the value: “With more than 40 years of experience in identity issuance, verification and advanced biometrics, our collaboration with Microsoft enables secure authentication with verified identities organizations can rely on to ensure individuals are who they claim to be and critical services can be accessed seamlessly and securely.” – Amit Sharma, Head of Digital Strategy, IDEMIA (6) That quote basically says it all: verified identities that organizations can rely on, enabling seamless and secure access. Now, let’s see how that translates into real-world usage. Use Cases and Benefits: From Onboarding to Recovery How can Verified ID (plus IDEMIA’s) be applied in day-to-day business? There are several high-impact use cases: Remote Employee Onboarding (aka Hire with Confidence): This is the most straightforward scenario. When bringing in a new hire you haven’t met in person, you can integrate an identity verification step. As described earlier, the new employee verifies their government ID and face once, gets a credential, and uses that to start their work. The hiring team can trust that “this person is real and is who they say they are.” This directly prevents many fake-employee scams. In fact, some companies have already tried informal versions of this: The Register reported a story of an identity verification company (ironically) who, after seeing suspicious candidates, told one applicant “next interview we’ll do a document verification, it’s easy, we’ll send you a barcode to scan your ID” – and that candidate never showed up for the next round because they knew they’d be caught (1). With Verified ID, this becomes a standard, automated part of the process, not an ad-hoc test. As a bonus, the employee’s Verified ID credential can also speed up IT onboarding (auto-provisioning accounts when the verified credential is presented) and even simplify things like proving work authorization to other services (think how you often have to send copies of IDs to benefits providers or background screeners – a credential could replace that). The new hire starts faster, and with less anxiety because they know there’s a strong proof attached to their identity, and the company has less risk from day one. Oh, and HR isn’t stuck babysitting sensitive documents – governance and privacy risk go down. Stronger Helpdesk and Support Authentication: Helpdesk fraud is a common way attackers exploit weak verification. Instead of asking employees for their first pet’s name or a short code (which an attacker might phish), support can use Verified ID to confirm the person’s identity. For example, if someone calls IT saying “I’m locked out of my account,” the support portal can send a push notification asking the user to present their Verified Employee credential or do a quick re-verify via the app. If the person on the phone is an impostor, they’ll fail this check. If it’s the real employee, it’s an easy tap on their phone to prove it’s them. This approach secures processes like password resets, unlocking accounts, or granting temporary access. Think of it as caller-ID on steroids. Instead of taking someone’s word that “I am Alice from Finance,” the system actually asks for proof. And because the proof is cryptographically verified, it’s much harder to trick than a human support agent with a sob story. This reduces the burden on support too – less time playing detective with personal questions, more confidence in automating certain requests. Account Recovery and On-Demand Re-Verification: We’ve all dealt with the hassle of account recovery when we lose a password or device. Often it’s a weak link: backup codes, personal Q&A, the support team asking some manager who can’t even tell if it’s really you, or asking for a copy of your ID… With Verified ID, organizations can offer a secure self-service recovery that doesn’t rely on shared secrets. For instance, if you lose access to your multi-factor auth and need to regain entry, you could be prompted to verify your identity with a government ID check through the Verified ID system. Once you pass, you might be allowed to reset your authentication methods. Microsoft is already moving in this direction – there’s talk of replacing security questions with Verified ID checks for Entra ID account recovery (6). The benefit here is you get high assurance that the person recovering the account is the legitimate owner. This is especially important for administrators or other highly privileged users. And it’s still faster for the user than, say, waiting days for IT to manual vet and approve a request. Additionally, companies could have policies where every X months, employees might get a prompt to reaffirm their identity if they’re engaging in sensitive work. It keeps everyone honest and catches any anomalies (like, imagine an attacker somehow compromised an account – when faced with an unexpected ID check, they wouldn’t be able to comply, raising a red flag). Step-Up Authentication for Sensitive Actions: Not every action an employee takes needs this level of verification, but some absolutely do. For example, a finance officer making a $10 million wire transfer, or an engineer pushing code to a production environment, or an HR admin downloading an entire employee database – these could all trigger a step-up authentication that includes verifying the user’s identity credential. In practice, the user might get a pop-up saying “Please present your Verified ID to continue.” It might even ask for a quick fresh selfie depending on the sensitivity, which can be matched against the one on file (using Face Match in a privacy-conscious way). This is like saying: “We know you logged in with your password and MFA earlier, but this action is so critical that we want to double-check you are still the one executing it – not someone who stole your session or is using your computer.” It’s analogous to how some banks send a one-time code for high-value transactions, but instead of just a code (which could be stolen), it’s verifying you. This dramatically reduces the risk of insider threats and account takeovers causing catastrophic damage. And for the user, it’s usually a simple extra step that they’ll understand the importance of, especially in high-stakes fields. It builds trust – both that the company trusts them enough to give access, but also verifies them to ensure no one is impersonating them. In all these cases, Verified ID is adding security without a huge usability cost. In fact, many users might prefer it to the status quo: I’d rather verify my identity once properly than have to answer a bunch of security questions or have an IT person eyeballing my ID over a grainy video call. It also introduces transparency and control. As an employee, if I’m using a Verified ID, I know exactly what credential I’m sharing and why, and I have a log of it. It’s not an opaque process where I send documents into a void. From a governance perspective, using Verified ID means less widespread personal data to protect, and a clearer audit trail of “this action was taken by Alice, whose identity was verified by method X at time Y.” It can even help with regulatory compliance – for instance, proving that you really know who has access to sensitive financial data (important for things like SOX compliance or other audits). And circling back to the theme of fake employees, if such a system is in place, it’s a massive deterrent. The barrier to entry for fraudsters becomes much higher. It’s not impossible (nothing is, and you still need to Assume breach), but now they’d have to fool a top-tier document verification and biometric check – not just an overworked recruiter. That likely requires physical presence and high-quality fake documents, which are riskier and more costly for attackers. The more companies adopt such measures, the less “return on investment” these hiring scams will have for cybercriminals. The Bigger Picture: Verified Identity as the New Security Frontier The convergence of trends here is interesting. On one hand, we have digital transformation and remote work which opened the door to these novel attacks. On the other hand, we have new security philosophies like Zero Trust that emphasize continuous verification of identity and context. Verified ID is essentially Zero Trust for the hiring and identity side of things: “never trust an identity claim, always verify it.” What’s exciting is that this can now be done without turning the enterprise into a surveillance state or creating unbearable friction for legitimate users. It leverages cryptography and user-centric design to raise security and preserve privacy. Microsoft’s involvement in decentralized identity and the integration of partners like IDEMIA signals that this approach is maturing. It’s moving from pilot projects to being built into mainstream products (Entra ID, Microsoft 365, LinkedIn even offers verification badges via Entra Verified ID now (5)). It’s worth noting LinkedIn’s angle here: job seekers can verify where they work or their government ID on their LinkedIn profile, which could also help employers spot fakes (though it’s voluntary and early-stage). For CISOs and identity architects, Verified ID offers a concrete tool to address what was previously a very squishy problem. Instead of just crossing your fingers that employees are who they say they are, you can enforce it. It’s analogous to the evolution of payments security: we moved from signatures (which were rarely checked) to PIN codes and chips, and now to contactless cryptographic payments. Hiring and access management can undergo a similar upgrade from assumption-based to verification-based. Of course, adopting Verified ID or any new identity tech requires planning. Organizations will need to update their onboarding processes, train HR and IT staff on the new procedure, and ensure employees are comfortable with it. Privacy considerations must be addressed (e.g., clarify that biometric data used for verification isn’t stored indefinitely, etc.). But compared to the alternative – doing nothing and hoping to avoid being the next company in a scathing news headline about North Korean fake workers – the effort is worthwhile. In summary, human identity has become the new primary perimeter for cybersecurity. We can build all the firewalls and endpoint protections we want, but if a malicious actor can legitimately log in through the front door as an employee, those defenses may not matter. Verified identity solutions like Microsoft Entra Verified ID (with partners like IDEMIA) provide a way to fortify that perimeter with strong, real-time checks. They bring trust back into remote interactions by shifting from “trust by default” to “trust because verified.” This is not just a theoretical future; it’s happening now. As of late 2025, these tools are generally available and being rolled out in enterprises. Early adopters will likely be those in highly targeted sectors or with regulatory pressures – think defense contractors, financial institutions, and tech companies burned by experience. But I suspect it will trickle into standard best practices over the next few years, much like multi-factor authentication did. The fight against fake employees and deepfake hiring scams will continue, and attackers will evolve new tricks (perhaps trying to fake the verifications themselves). But having this layer in place tilts the balance back in favor of the defenders. It forces attackers to take more risks and expend more resources, which in turn dissuades many from even trying. To end on a practical note: If you’re a security decision-maker, now is a good time to evaluate your organization’s hiring and identity verification practices. Conduct a risk assessment – do you have any way to truly verify a new remote hire’s identity? How confident are you that all your current employees are real? If those questions make you uncomfortable, it’s worth looking into solutions like Verified ID. We’re entering an era where digital identity proofing will be as standard as background checks in HR processes. The technology has caught up to the threat, and embracing it could save your company from a very costly “lesson learned.” Remember: trust is good, but verified trust is better. By making identity verification a seamless part of the employee lifecycle, we can help ensure that the only people on the payroll are the ones we intended to hire. In a world of sophisticated fakes, that confidence is priceless. Sources: (1.1) The Register – Amazon blocked 1,800 suspected North Korean scammers seeking jobs (Dec 18, 2025) – S. Schmidt comments on DPRK fake workers and advises multi-stage identity verification. https://www.theregister.com/2025/12/18/amazon_blocked_fake_dprk_workers ("We believe, at this point, every Fortune 100 and potentially Fortune 500 has a pretty high number of risky employees on their books" Socure Chief Growth Officer Rivka Little) & https://www.linkedin.com/posts/stephenschmidt1_over-the-past-few-years-north-korean-dprk-activity-7407485036142276610-dot7 (“Implement identity verification at multiple hiring stages and monitor for anomalous technical behavior”, Amazon’s CSO, S. Schmidt) | (1.2) Heal Security – Amazon Catches North Korean IT Worker by Tracking Tiny 110ms Keystroke Delays (Dec 19, 2025). https://healsecurity.com/amazon-catches-north-korean-it-worker-by-tracking-tiny-110ms-keystroke-delays/ (2.1) U.S. Department of Justice – “Charges and Seizures Brought in Fraud Scheme Aimed at Denying Revenue for Workers Associated with North Korea” (May 16, 2024). https://www.justice.gov/usao-dc/pr/charges-and-seizures-brought-fraud-scheme-aimed-denying-revenue-workers-associated-north | (2.2) PCMag – “Remote Scammers Infiltrate 300+ Companies” (Aug 4, 2025). https://www.pcmag.com/news/is-your-coworker-a-north-korean-remote-scammers-infiltrate-300-plus-companies | (2.3) POLITICO – Tech companies have a big remote worker problem: North Korean operatives (May 12 2025). https://www.politico.com/news/2025/05/12/north-korea-remote-workers-us-tech-companies-00340208 ("I’ve talked to a lot of CISOs at Fortune 500 companies, and nearly every one that I’ve spoken to about the North Korean IT worker problem has admitted they’ve hired at least one North Korean IT worker, if not a dozen or a few dozen,” Charles Carmakal, Chief Technology Officer at Google Cloud’s Mandiant) & North Koreans posing as remote IT workers infiltrated 136 U.S. companies (Nov 14, 2025). https://www.politico.com/news/2025/11/14/north-korean-remote-work-it-scam-00652866 HR Dive – By 2028, 1 in 4 candidate profiles will be fake, Gartner predicts (Aug 8, 2025) – Gartner research highlighting rising candidate fraud and 25% fake profile forecast. https://www.hrdive.com/news/fake-job-candidates-ai/757126/ World Economic Forum – Unmasking the AI-powered, remote IT worker scams threatening businesses (Dec 15, 2025) – Overview of deepfake hiring threats; recommends government ID checks at multiple hiring stages. https://www.weforum.org/stories/2025/12/unmasking-ai-powered-remote-it-worker-scams-threatening-businesses-worldwide/ The Verge – LinkedIn gets a free verified badge that lets you prove where you work (Apr 2023) – Describes LinkedIn’s integration with Microsoft Entra for profile verification. https://www.theverge.com/2023/4/12/23679998/linkedin-verification-badge-system-clear-microsoft-entra Microsoft Tech Community – Building defense in depth: Simplifying identity security with new partner integrations (Nov 24, 2025 by P. Nrisimha) – Microsoft Entra blog announcing Verified ID GA, includes IDEMIA integration and quotes (Amit Sharma, Ankur Patel). https://techcommunity.microsoft.com/t5/microsoft-entra-blog/building-defense-in-depth-simplifying-identity-security-with-new/ba-p/4468733 & https://www.linkedin.com/posts/idemia-public-security_synced-passkeys-and-high-assurance-account-activity-7407061181879709696-SMi7 & https://www.linkedin.com/posts/4ankurpatel_synced-passkeys-and-high-assurance-account-activity-7406757097578799105-uFZz ("high assurance verification without custom business contracts or technical implementations", Ankur Patel) Microsoft Entra Blog – Building trust into digital experiences with decentralized identities (June 10, 2020 by A. Simons & A. Patel) – Background on Microsoft’s approach to decentralized identity (DID, Verifiable Credentials). https://techcommunity.microsoft.com/t5/microsoft-entra-blog/building-trust-into-digital-experiences-with-decentralized/ba-p/1257362 & Decentralized digital identities and blockchain: The future as we see it. https://www.microsoft.com/en-us/microsoft-365/blog/2018/02/12/decentralized-digital-identities-and-blockchain-the-future-as-we-see-it/ & Partnering for a path to digital identity (Janv 22, 2018) https://blogs.microsoft.com/blog/2018/01/22/partnering-for-a-path-to-digital-identity/ About the Author I'm Samuel Gaston-Raoul, Partner Solution Architect at Microsoft, working across the EMEA region with the diverse ecosystem of Microsoft partners—including System Integrators (SIs) and strategic advisory firms, Independent Software Vendors (ISVs) / Software Development Companies (SDCs), and Startups. I engage with our partners to build, scale, and innovate securely on Microsoft Cloud and Microsoft Security platforms. With a strong focus on cloud and cybersecurity, I help shape strategic offerings and guide the development of security practices—ensuring alignment with market needs, emerging challenges, and Microsoft’s product roadmap. I also engage closely with our product and engineering teams to foster early technical dialogue and drive innovation through collaborative design. Whether through architecture workshops, technical enablement, or public speaking engagements, I aim to evangelize Microsoft’s security vision while co-creating solutions that meet the evolving demands of the AI and cybersecurity era.
From “No” to “Now”: A 7-Layer Strategy for Enterprise AI Safety
The “block” posture on Generative AI has failed. In a global enterprise, banning these tools doesn't stop usage; it simply pushes intellectual property into unmanaged channels and creates a massive visibility gap in corporate telemetry. The priority has now shifted from stopping AI to hardening the environment so that innovation can run at velocity without compromising data sovereignty. Traditional security perimeters are ineffective against the “slow bleed” of AI leakage - where data moves through prompts, clipboards, and autonomous agents rather than bulk file transfers. To secure this environment, a 7-layer defense-in-depth model is required to treat the conversation itself as the new perimeter. 1. Identity: The Only Verifiable Perimeter Identity is the primary control plane. Access to AI services must be treated with the same rigor as administrative access to core infrastructure. The strategy centers on enforcing device-bound Conditional Access, where access is strictly contingent on device health. To solve the "Account Leak" problem, the deployment of Tenant Restrictions v2 (TRv2) is essential to prevent users from signing into personal tenants using corporate-managed devices. For enhanced coverage, Universal Tenant Restrictions (UTR) via Global Secure Access (GSA) allows for consistent enforcement at the cloud edge. While TRv2 authentication-plane is GA, data-plane protection is GA for the Microsoft 365 admin center and remains in preview for other workloads such as SharePoint and Teams. 2. Eliminating the Visibility Gap (Shadow AI) You can’t secure what you can't see. Microsoft Defender for Cloud Apps (MDCA) serves to discover and govern the enterprise AI footprint, while Purview DSPM for AI (formerly AI Hub) monitors Copilot and third-party interactions. By categorizing tools using MDCA risk scores and compliance attributes, organizations can apply automated sanctioning decisions and enforce session controls for high-risk endpoints. 3. Data Hygiene: Hardening the “Work IQ” AI acts as a mirror of internal permissions. In a "flat" environment, AI acts like a search engine for your over-shared data. Hardening the foundation requires automated sensitivity labeling in Purview Information Protection. Identifying PII and proprietary code before assigning AI licenses ensures that labels travel with the data, preventing labeled content from being exfiltrated via prompts or unauthorized sharing. 4. Session Governance: Solving the “Clipboard Leak” The most common leak in 2025 is not a file upload; it’s a simple copy-paste action or a USB transfer. Deploying Conditional Access App Control (CAAC) via MDCA session policies allows sanctioned apps to function while specifically blocking cut/copy/paste. This is complemented by Endpoint DLP, which extends governance to the physical device level, preventing sensitive data from being moved to unmanaged USB storage or printers during an AI-assisted workflow. Purview Information Protection with IRM rounds this out by enforcing encryption and usage rights on the files themselves. When a user tries to print a "Do Not Print" document, Purview triggers an alert that flows into Microsoft Sentinel. This gives the SOC visibility into actual policy violations instead of them having to hunt through generic activity logs. 5. The “Agentic” Era: Agent 365 & Sharing Controls Now that we're moving from "Chat" to "Agents", Agent 365 and Entra Agent ID provide the necessary identity and control plane for autonomous entities. A quick tip: in large-scale tenants, default settings often present a governance risk. A critical first step is navigating to the Microsoft 365 admin center (Copilot > Agents) to disable the default “Anyone in organization” sharing option. Restricting agent creation and sharing to a validated security group is essential to prevent unvetted agent sprawl and ensure that only compliant agents are discoverable. 6. The Human Layer: “Safe Harbors” over Bans Security fails when it creates more friction than the risk it seeks to mitigate. Instead of an outright ban, investment in AI skilling-teaching users context minimization (redacting specifics before interacting with a model) - is the better path. Providing a sanctioned, enterprise-grade "Safe Harbor" like M365 Copilot offers a superior tool that naturally cuts down the use of Shadow AI. 7. Continuous Ops: Monitoring & Regulatory Audit Security is not a “set and forget” project, particularly with the EU AI Act on the horizon. Correlating AI interactions and DLP alerts in Microsoft Sentinel using Purview Audit (specifically the CopilotInteraction logs) data allows for real-time responses. Automated SOAR playbooks can then trigger protective actions - such as revoking an Agent ID - if an entity attempts to access sensitive HR or financial data. Final Thoughts Securing AI at scale is an architectural shift. By layering Identity, Session Governance, and Agentic Identity, AI moves from being a fragmented risk to a governed tool that actually works for the modern workplace.Step by Step: 2-Tier PKI Lab
Purpose of this blog Public Key Infrastructure (PKI) is the backbone of secure digital identity management, enabling encryption, digital signatures, and certificate-based authentication. However, neither setting up a PKI nor management of certificates is something most IT pros do on a regular basis and given the complexity and vastness of the subject it only makes sense to revisit the topic from time to time. What I have found works best for me is to just set up a lab and get my hands dirty with the topic that I want to revisit. One such topic that I keep coming back to is PKI - be it for creating certificate templates, enrolling clients, or flat out creating a new PKI itself. But every time I start deploying a lab or start planning a PKI setup, I end up spending too much time sifting through the documentations and trying to figure out why my issuing certificate authority won't come online! To make my life easier I decided to create a cheatsheet to deploy a simple but secure 2-tier PKI lab based on industry best practices that I thought would be beneficial for others like me, so I decided to polish it and make it into a blog. This blog walks through deploying a two-tier PKI hierarchy using Active Directory Certificate Services (AD CS) on Windows Server: an offline Root Certification Authority (Root CA) and an online Issuing Certification Authority (Issuing CA). We’ll cover step-by-step deployment and best practices for securing the root CA, conducting key ceremonies, and maintaining Certificate Revocation Lists (CRLs). Overview: Two-Tier PKI Architecture and Components In a two-tier PKI, the Root CA sits at the top of the trust hierarchy and issues a certificate only to the subordinate Issuing CA. The Root CA is kept offline (disconnected from networks) to protect its private key and is typically a standalone CA (not domain-joined). The Issuing CA (sometimes called a subordinate or intermediate CA) is kept online to issue certificates to end-entities (users, computers, services) and is usually an enterprise CA integrated with Active Directory for automation and certificate template support. Key components: Offline Root CA: A standalone CA, often on a workgroup server, powered on only when necessary (initial setup, subordinate CA certificate signing, or periodic CRL publishing). By staying offline, it is insulated from network threats. Its self-signed certificate serves as the trust anchor for the entire PKI. The Root CA’s private key must be rigorously protected (ideally by a Hardware Security Module) because if the root is compromised, all certificates in the hierarchy are compromised. Online Issuing CA: An enterprise subordinate CA (domain-joined) that handles day-to-day certificate issuance for the organization. It trusts the Root CA (via the root’s certificate) and is the one actually responding to certificate requests. Being online, it must also be secured, but its key is kept online for operations. Typically, the Issuing CA publishes certificates and CRLs to Active Directory and/or HTTP locations for clients to download. The following diagram shows the simplified view of this implementations: The table below summarizes the roles and differences: Aspect Offline Root CA Online Issuing CA Role Standalone Root CA (workgroup) Enterprise Subordinate CA (domain member) Network Connectivity Kept offline (powered off or disconnected when not issuing) Online (running continuously to serve requests) Usage Signs only one certificate (the subordinate CA’s cert) and CRLs Issues end-entity certificates (users, computers, services) Active Directory Not a member of AD domain; doesn’t use templates or auto-enrollment Integrated with AD DS; uses certificate templates for streamlined issuance Security Extremely high: physically secured, limited access, often protected by HSM Very High: server hardened, but accessible on network; HSM recommended for private key CRL Publication Manual. Admin must periodically connect, generate, and distribute CRL. Delta CRLs usually disabled. Automatic. Publishes CRLs to configured CDP locations (AD DS, HTTP) at scheduled intervals. Validity Period Longer (e.g. 5-10+ years for the CA certificate) to reduce frequency of renewal. Shorter (e.g. 2 years) to align with organizational policy; renewed under the root when needed. In this lab setup, we will create a Contoso Root CA (offline) and a Contoso Issuing CA (online) as an example. This mirrors real-world best practices which is to "deploy a standalone offline root CA and an online enterprise subordinate CA”. Deploying the Offline Root CA Setting up the offline Root CA involves preparing a dedicated server, installing AD CS, configuring it as a root CA, and then securing it. We’ll also configure certificate CDP/AIA (CRL Distribution Point and Authority Information Access) locations so that issued certificates will point clients to the correct locations to fetch the CA’s certificate and revocation list. Step 1: Prepare the Root CA Server (Offline) Provision an isolated server: Install a Windows Server OS (e.g., Windows Server 2022) on the machine designated to be the Root CA. Preferably on a portable enterprise grade physical server that can be stored in a safe. Do not join this server to any domain – it should function in a Workgroup to remain independent of your AD forest. System configuration: Give the server a descriptive name (e.g., ROOTCA) and assign a static IP (even though it will be offline, a static IP helps when connecting it temporarily for management). Install the latest updates and security patches while it’s still able to go online. Lock down network access: Once setup is complete, disable or unplug network connections. If the server must remain powered on for any reason, ensure all unnecessary services/ports are disabled to minimize exposure. In practice, you will keep this server shut down or physically disconnected except when performing CA maintenance. Step 2: Install the AD CS Role on the Root CA Add the Certification Authority role: On the Root CA server, open Server Manager and add the Active Directory Certificate Services role. During the wizard, select the Certification Authority role service (no need for web enrollment or others on the root). Proceed through the wizard and complete the installation. You can also install the CA role and management tools via PowerShell: Install-WindowsFeature AD-Certificate -IncludeManagementToolsThis Role Services: Choose Certification Authority. Setup Type: Select Standalone CA (since this root CA is not domain-joined). CA Type: Select Root CA. Private Key: Choose “Create a new private key.” Cryptography: If using an HSM, select the HSM’s Cryptographic Service Provider (CSP) here; otherwise use default. Choose a strong key length (e.g., 2048 or 4096 bits) and a secure hash algorithm (SHA-256 or higher). CA Name: Provide a common name for the CA (e.g., “Contoso Root CA”). This name will appear in issued certificates as the Issuer. Avoid using a machine DNS name here for security – pick a name without revealing the server’s actual hostname. Validity Period: Set a long validity (e.g., 10 years) for the root CA’s self-signed certificate. A decade is common for enterprise roots, reducing how often you must touch the offline CA for renewal. Database: Specify locations for the CA database and logs (the defaults are fine for a lab). Review settings and complete the configuration. This process will generate the root CA’s key pair and self-signed certificate, establishing the Root CA.Post-install configuration: After the binary installation, click Configure Active Directory Certificate Services (a notification in Server Manager). In the configuration wizard: You can also perform this configuration via PowerShell in one line: Install-AdcsCertificationAuthority ` -CAType StandaloneRootCA ` -CryptoProviderName "YourHSMProvider" ` -HashAlgorithmName SHA256 -KeyLength 2048 ` -CACommonName "Contoso Root CA" ` -ValidityPeriod Years -ValidityPeriodUnits 10 This would set up a standalone Root CA named "Contoso Root CA" with a 2048-bit key on an HSM provider, valid for 10 years. Step 3: Integrate an HSM (Optional but Recommended) If your lab has a Hardware Security Module, use it to secure the Root CA’s keys. Using an HSM provides a dedicated, tamper-resistant storage for CA private keys and can further protect against key compromise. To integrate: Install the HSM vendor’s software and drivers on the Root CA server. Initialize the HSM and create a security world or partition as per the vendor instructions. Before or during the CA configuration (Step 2 above), ensure the HSM is ready to generate/store the key. When running the AD CS configuration, select the HSM’s CSP/KSP for the cryptographic provider so that the CA’s private key is generated on the HSM. Secure any HSM admin tokens or smartcards. For a root CA, you might employ M of N key splits – requiring multiple key custodians to collaborate to activate the HSM or key – as part of the key ceremony (discussed later). (If an HSM is not available, the root key will be stored on the server’s disk. At minimum, protect it with a strong admin passphrase when prompted, and consider enabling the option to require administrator interaction (e.g., a password) whenever the key is accessed.) Step 4: Configure CA Extensions (CDP/AIA) It’s critical to configure how the Root CA publishes its certificate and revocation list, since the root is offline and cannot use Active Directory auto-publishing. Open the Certification Authority management console (certsrv.msc), right-click the CA name > Properties, and go to the Extensions tab. We will set the CRL Distribution Points (CDP) and Authority Information Access (AIA) URLs: CRL Distribution Point (CDP): This is where certificates will tell clients to fetch the CRL for the Root CA. By default, a standalone CA might have a file:// path or no HTTP URL. Click Add and specify an HTTP URL that will be accessible to all network clients, such as: http://<IssuingCA_Server>/CertEnroll/<CaName><CRLNameSuffix><DeltaCRLAllowed>.crl For example, if your issuing CA’s server name is ISSUINGCA.contoso.local, the URL might be http://issuingca.contoso.local/CertEnroll/Contoso%20Root%20CA.crl This assumes the Issuing CA (or another web server) will host the Root CA’s CRL in the CertEnroll directory. Check the boxes for “Include in the CDP extension of issued certificates” and “Include in all CRLs. Clients use this to find Delta CRLs” (you can uncheck the delta CRL publication on the root, as we won’t use delta CRLs on an offline root). Since the root CA won’t often revoke its single issued cert (the subordinate CA), delta CRLs aren’t necessary. Note: If your Active Directory is in use and you want to publish the Root CA’s CRL to AD, you can also add an ldap:///CN=... path and check “Publish in Active Directory”. However, publishing to AD from an offline CA must be done manually using the following command when the root is temporarily connected. certutil -dspublish Many setups skip LDAP for offline roots and rely on HTTP distribution. Authority Information Access (AIA): This is where the Root CA’s certificate will be published for clients to download (to build certificate chains). Add an HTTP URL similarly, for example: http://<IssuingCA_Server>/CertEnroll/<ServerDNSName>_<CaName><CertificateName>.crt This would point to a copy of the Root CA’s certificate that will be hosted on the issuing CA web server. Check “Include in the AIA extension of issued certificates”. This way, any certificate signed by the Root CA (like your subordinate CA’s cert) contains a URL where clients can fetch the Root CA’s cert if they don’t already have it. After adding these, remove any default entries that are not applicable (e.g., LDAP if the root isn’t going to publish to AD, or file paths that won’t be used by clients). These settings ensure that certificates issued by the Root CA (in practice, just the subordinate CA’s certificate) will carry the correct URLs for chain building and revocation checking. Step 5: Back Up the Root CA and Issue the Subordinate Certificate With the Root CA configured, we need to issue a certificate for the Issuing CA (subordinate). We’ll perform that in the next section from the Issuing CA’s side via a request file. Before taking the root offline, ensure you: Back up the CA’s private key and certificate: In the Certification Authority console, or via the CA Backup wizard, export the Root CA’s key pair and CA certificate. Protect this backup (store it offline in a secure location, e.g., on encrypted removable media in a safe). This backup is crucial for disaster recovery or if the Root CA needs to be migrated or restored. Save the Root CA Certificate: You will need the Root CA’s public certificate (*.crt) to distribute to other systems. Have it exported (Base-64 or DER format) for use on the Issuing CA and for clients. Initial CRL publication: Manually publish the first CRL so that it can be distributed. Open an elevated Command Prompt on the Root CA and run: certutil -crl This generates a new CRL file (in the CA’s configured CRL folder, typically %windir%\system32\CertSrv\CertEnroll). Take that CRL file and copy it to the designated distribution point (for example, to the CertEnroll directory on the Issuing CA’s web server, as per the HTTP URL configured). If using Active Directory for CRL distribution, you would also publish it to AD now (e.g., certutil -dspublish -f RootCA.crl on a domain-connected machine). In most lab setups, copying to an HTTP share is sufficient. With these tasks done, the Root CA is ready. At this point, disconnect or power off the Root CA and store it securely – it should remain offline except when it’s absolutely needed (like publishing a new CRL or renewing the subordinate CA’s certificate in the far future). Keeping the root CA offline maximizes its security by minimizing exposure to compromise. Best Practices for Securing the Root CA: The Root CA is the trust anchor, so apply stringent security practices: Physical security: Store the Root CA machine in a locked, secure location. If it’s a virtual machine, consider storing it on a disconnected hypervisor or a USB drive locked in a safe. Only authorized PKI team members should have access. An offline CA should be treated like crown jewels – offline CAs should be stored in secure locations. Minimal exposure: Keep the Root CA powered off and disconnected when not in use. It should not be left running or connected to any network. Routine operations (like issuing end-entity certs) should never involve the root. Admin access control: Limit administrative access on the Root CA server. Use dedicated accounts for PKI administration. Enable auditing on the CA for any changes or issuance events. No additional roles or software: Do not use the Root CA server for any other function (no web browsing, no email, etc.). Fewer installed components means fewer potential vulnerabilities. Protect the private key: Use an HSM if possible; if not, ensure the key is at least protected by a strong password and consider splitting knowledge of that password among multiple people (so no single person can activate the CA). Many organizations opt for an offline root key ceremony (see below) to generate and handle the root key with multiple witnesses and strict procedures. Keep system time and settings consistent: If the Root CA is powered off for long periods, ensure its clock is accurate whenever it is started (to avoid issuing a CRL or certificate with a wrong date). Don’t change the server name or CA name after installation (doing so invalidates issued certs). Periodic health checks: Even though offline, plan to turn on the Root CA at a secure interval (e.g., semi-annually or annually) to perform tasks like CRL publishing and system updates. Make sure to apply OS security updates during these maintenance windows, as offline does not mean immune to vulnerabilities (especially if it ever connects to a network for CRL publication or uses removable media). Deploying the Online Issuing CA Next, set up the Issuing CA server which will actually issue certificates to end entities in the lab. This server will be domain-joined (if using AD integration) and will obtain its CA certificate from the Root CA we just configured. Step 1: Prepare the Issuing CA Server Provision the server: Install Windows Server on a new machine (or VM) that will be the Issuing CA. Join this server to the Active Directory domain (e.g., Contoso.local). Being an enterprise CA, it needs domain membership to publish templates and integrate with AD security groups. Rename the server to something descriptive like ISSUINGCA for clarity. Assign a static IP and ensure it can communicate on the network. IIS for web enrollment (optional): If you plan to use the Web Enrollment or Certificate Enrollment Web Services, ensure IIS is installed. (The AD CS installation wizard can add it if you include those role services.) For this guide, we will include the Web Enrollment role so that the CertEnroll directory is set up for hosting certificate and CRL files. Step 2: Install AD CS Role on Issuing CA On the Issuing CA server, add the Active Directory Certificate Services role via Server Manager or PowerShell. This time, select both Certification Authority and Certification Authority Web Enrollment role services (Web Enrollment will set up the HTTP endpoints for certificate requests if needed). For example, using PowerShell: Install-WindowsFeature AD-Certificate, ADCS-Web-Enrollment -IncludeManagementTools After installation, launch the AD CS configuration wizard: Role Services: Choose Certification Authority (and Web Enrollment if prompted). Setup Type: Select Enterprise CA (since this CA will integrate with AD DS). CA Type: Select Subordinate CA (this indicates it will get its cert from an existing root CA). Private Key: Choose “Create a new private key” (we’ll generate a new key pair for this CA). Cryptography: If using an HSM here as well, select the HSM’s CSP/KSP for the issuing CA’s key. Otherwise, choose a strong key length (2048+ bits, SHA256 or better for hash). CA Name: Provide a name (e.g., “Contoso Issuing CA”). This name will appear as the Issuer on certificates it issues. Certificate Request: The wizard will ask how you want to get the subordinate CA’s certificate. Choose “Save a certificate request to file”. Specify a path, e.g., C:\CertRequest\issuingCA.req. The wizard will generate a request file that we need to take to the Root CA for signing. (Since our Root CA is offline, this file transfer might be via secure USB or a network share when the root is temporarily online.) CA Database: Choose locations or accept defaults for the certificate DB and logs. Finish the configuration wizard, which will complete pending because the CA doesn’t have a certificate yet. The AD CS service on this server won’t start until we import the issued cert from the root. Step 3: Integrate HSM on Issuing CA (Optional) If available, repeat the HSM setup on the Issuing CA: install HSM drivers, initialize it, and generate/secure the key for the subordinate CA on the HSM. Ensure you chose the HSM provider during the above configuration so that the issuing CA’s private key is stored in the HSM. Even though this CA is online, an HSM still greatly enhances security by protecting the private key from extraction. The issuing CA’s HSM may not require multiple custodians to activate (as it needs to run continuously), but should still be physically secured. Step 4: Obtain the Issuing CA’s Certificate from the Root CA Now we have a pending request (issuingCA.req) for the subordinate CA. To get its certificate: Transport the request to the Root CA: Copy the request file to the offline Root CA (via secure means – e.g., formatted new USB stick). Start up the Root CA (in a secure, offline setting) and open the Certification Authority console. Submit the request on Root CA: Right-click the Root CA in the CA console -> All Tasks -> Submit new request, and select the .req file. The request will appear in the Pending Requests on the root. Issue the subordinate CA certificate: Find the pending request (it will list the Issuing CA’s name). Right-click and choose All Tasks > Issue. The subordinate CA’s certificate is now issued by the Root CA. Export the issued certificate: Still on the Root CA, go to Issued Certificates, find the newly issued subordinate CA cert (you can identify it by the Request ID or by the name). Right-click it and choose Open or All Tasks > Export to get the certificate in a file form. If using the console’s built-in “Export” it might only allow binary; alternatively use the certutil command: certutil -dup <RequestID> .\ContosoIssuingCA.cer or simply open and copy to file. Save the certificate as issuingCA.cer. Also make sure you have a copy of the Root CA’s certificate (if not already done). Publish Root CA cert and CRL as needed: Before leaving the Root CA, you may also want to ensure the Root’s own certificate and latest CRL are available to the issuing CA and clients. If not already done in Step 5 of root deployment, export the Root CA cert (DER format) and copy the CRL file. You might use certutil -crl again if some time has passed since initial CRL. Now take the issuingCA.cer file (and root cert/CRL files) and move them back to the Issuing CA server. Step 5: Install the Issuing CA’s Certificate and Complete Configuration On the Issuing CA server (which is still waiting for its CA cert): Install the subordinate CA certificate: In Server Manager or the Certification Authority console on the Issuing CA, there should be an option to “Install CA Certificate” (if the AD CS configuration wizard is still open, it will prompt for the file; or otherwise, in the CA console right-click the CA name > All Tasks > Install CA Certificate). Provide the issuingCA.cer file obtained from the root. This will install the CA’s own certificate and start the CA service. The Issuing CA is now operational as a subordinate CA. Alternatively, use PowerShell: certutil -installcert C:\CertRequest\issuingCA.cer This installs the cert and associates it with the pending key. Trust the Root CA certificate: Because the Issuing CA is domain-joined, when you install the subordinate cert, it might automatically place the Root CA’s certificate in the Trusted Root Certification Authorities store on that server (and possibly publish it to AD). If not, you should manually install the Root CA’s certificate into the Trusted Root CA store on the Issuing CA machine (using the Certificates MMC or certutil -addstore -f Root rootCA.cer). This step prevents any “chain not trusted” warnings on the Issuing CA and ensures it trusts its parent. In an enterprise environment, you would also distribute the root certificate to all client machines (e.g., via Group Policy) so that they trust the whole chain. Import Root CRL: Copy the Root CA’s CRL (*.crl file) to the Issuing CA’s CRL distribution point location (e.g., C:\Windows\System32\CertSrv\CertEnroll\ if that’s the directory served by the web server). This matches the HTTP URL we configured on the root. Place the CRL file there and ensure it is accessible (the Issuing CA’s IIS might need to serve static .crl files; often, if Web Enrollment is installed, the CertEnroll folder is under C:\Inetpub\wwwroot\CertEnroll). At this point, the subordinate CA and any client hitting the HTTP URL can retrieve the root’s CRL. The subordinate CA is now fully established. It holds a certificate issued by the Root CA (forming a complete chain of trust), and it’s ready to issue end-entity certificates. Step 6: Configure Issuing CA Settings and Start Services Start the Certificate Services: If the CA service (CertSvc) isn’t started automatically, start or restart it. On PowerShell: Restart-Service certsvc The CA should show as running in the CA console with the name “Contoso Issuing CA” (or your chosen name). Configure Certificate Templates: Because this is an Enterprise CA, it can utilize certificate templates stored in Active Directory to simplify issuing common cert types (user auth, computer auth, web server SSL, etc.). By default, some templates (e.g., User, Computer) are available but not issued. In the Certification Authority console under Certificate Templates, you can choose which templates to issue (e.g., right-click > New > Certificate Template to Issue, then select templates like “User” or “Computer”). This lab guide doesn’t require specific templates but know that only Enterprise CAs can use templates. Templates define the policies and settings (cryptography, enrollment permissions, etc.) for issued certificates. Ensure you enable only the templates needed and configure their permissions appropriately (e.g., allow the appropriate groups to enroll). Set CRL publishing schedule: The Issuing CA will automatically publish its own CRL (for certificates it issues) at intervals. You can adjust the CRL and Delta CRL publication interval in the CA’s Properties > CRL Period. A common practice is a small base CRL period (e.g., 1 week or 2 weeks) for issuing CAs, because they may revoke user certs more frequently; and enable Delta CRLs (published daily) for timely revocation information. Make sure the CDP/AIA for the Issuing CA itself are properly configured too (the wizard usually sets LDAP and HTTP locations, but verify in the Extensions tab). In a lab, the default settings are fine. Web Enrollment (if installed): You can verify the web enrollment by browsing to http://<IssuingCA>/certsrv. This web UI allows browser-based certificate requests. It’s a legacy interface mostly, but for testing it can be used if your clients aren’t domain-joined or if you want a manual request method. In modern use, the Certificate Enrollment Web Service/Policy roles or auto-enrollment via Group Policy are preferred for remote and automated enrollment. At this stage, your PKI is operational: the Issuing CA trusts the offline Root CA and can issue certificates. The Root CA can be kept offline with confidence that the subordinate will handle all regular work. Validation and Testing of the PKI It’s important to verify that the PKI is configured correctly: Check CA status: On the Issuing CA, open the Certification Authority console and ensure no errors. Verify that the Issuing CA’s certificate shows OK (no red X). On the Root CA (offline most of the time), you can use the Pkiview.msc snap-in (Microsoft PKI Health Tool) on a domain-connected machine to check the health of the PKI. This tool will show if the CDPs/AIA are reachable and if certificates are properly published. Trust chain on clients: On a domain-joined client PC, the Root CA certificate should be present in the Trusted Root Certification Authorities store (if the Issuing CA was installed as Enterprise CA, it likely published the root cert to AD automatically; you can also distribute it via Group Policy or manually). The Issuing CA’s certificate should appear in the Intermediate Certification Authorities store. This establishes the chain of trust. If not, import the root cert into the domain’s Group Policy for Trusted Roots. A quick test: on a client, run certutil -config "ISSUINGCA\\Contoso Issuing CA" -ping to see if it can contact the CA (or use the Certification Authority MMC targeting the issuing CA). Enroll a test certificate: Try to enroll for a certificate from the Issuing CA. For instance, from a domain-joined client, use the Certificates MMC (in Current User or Computer context) and initiate a certificate request for a User or Computer certificate (depending on templates issued). If auto-enrollment is configured via Group Policy for a template, you can simply log on a client and see if it automatically receives a certificate. Alternatively, use the web enrollment page or certreq command to submit a request. The request should be approved and a certificate issued by "Contoso Issuing CA". After enrollment, inspect the issued certificate: it should chain up to "Contoso Root CA" without errors. Ensure that the certificate’s CDP points to the URL we set (and try to browse that URL to see the CRL file), and that the AIA points to the root cert location. Revocation test (optional): To test CRL behavior, you could revoke a test certificate on the Issuing CA (using the CA console) and publish a new CRL. On the client, after updating the CRL, the revoked certificate should show as revoked. For the Root CA, since it shouldn’t issue end-entity certs, you wouldn’t normally revoke anything except potentially the subordinate CA’s certificate (which would be a drastic action in case of compromise). By issuing a test certificate and validating the chain and revocation, you confirm that your two-tier PKI lab is functioning correctly. Maintaining the PKI: CRLs, Key Ceremonies, and Security Procedures Deploying the PKI is only the beginning. Proper maintenance and operational procedures are crucial to ensure the PKI remains secure and reliable over time. Periodic CRL Updates for the Offline Root: The Root CA’s CRL has a defined validity period (set during configuration, often 6 or 12 months for offline roots). Before the CRL expires, the Root CA must be brought online (in a secure environment) to issue a new CRL. It’s recommended to schedule CRL updates periodically (e.g., semi-annually) to prevent the CRL from expiring. An expired CRL can cause certificate chain validation to fail, potentially disrupting services. Typically, organizations set the offline root CRL validity so that publishing 1-2 times a year is sufficient. When the time comes: Start the Root CA (ensuring the system clock is correct). Run certutil -crl to issue a fresh CRL. Distribute the new CRL: copy it to the HTTP CDP location (overwrite the old file) and, if applicable, use certutil -dspublish -f RootCA.crl to update it in Active Directory. Verify that the new CRL’s next update date is extended appropriately (e.g., another 6 months out). Clients and the Issuing CA will automatically pick up the new CRL when checking for revocation. (The Issuing CA, if configured, might cache the root CRL and need a restart or certutil -setreg ca\CRLFlags +CRLF_REVCHECK_IGNORE_OFFLINE tweak if the root CRL expires unexpectedly. Keeping the schedule prevents such issues.) Issuing CA CRL and OCSP: The Issuing CA’s CRLs are published automatically as it is online. Ensure the IIS or file share hosting the CRL is accessible. Optionally, consider setting up an Online Responder (OCSP) for real-time status checking, especially if CRLs are large or you need faster revocation information. OCSP is another AD CS role service that can be configured on the issuing CA or another server to answer certificate status queries. This might be beyond a simple lab, but it’s worth mentioning for completeness. Key Ceremonies and Documentation: For production environments (and good practice even in labs), formalize the process of handling CA keys in a Key Ceremony. A key ceremony is a carefully controlled process for activities like generating the Root CA’s key pair, installing the CA, and signing subordinate certificates. It often involves multiple people to ensure no single person has unilateral control (principle of dual control) and to witness the process. Best practices for a Root CA key ceremony include: Advance Planning: Create a step-by-step script of the ceremony tasks. Include who will do what, what materials are needed (HSMs, installation media, backup devices, etc.), and the order of operations. Multiple trusted individuals present: Roles might include a Ceremony Administrator (leads the process), a Security Officer (responsible for HSM or key material handling), an Auditor (to observe and record), etc. This prevents any one person from manipulating the process and increases trust. Secure environment: Conduct the ceremony in a secure location (e.g., a locked room) free of recording devices or unauthorized personnel. Ensure the Root CA machine is isolated (no network), and ideally that BIOS/USB access controls are in place to prevent any malware. Generate keys with proper controls: If using an HSM, initialize and generate the key with the required number of key custodians each providing part of the activation material (e.g., smartcards or passphrases). Immediately back up the HSM partition or key to secure media (requiring the same custodians to restore). Sign subordinate CA certificate: As part of the ceremony, once the root key is ready, sign the subordinate’s request. This might also be a witnessed step. Document every action: Write down each command run, each key generated, serial numbers of devices used, and have all participants sign an acknowledgment of the outcomes. Also record the fingerprints of the generated Root CA certificate and any subordinate certificate to ensure they are exactly as expected. Secure storage: After the ceremony, store the Root CA machine (if it’s a laptop or VM) and HSM tokens in a tamper-evident bag or safe. The idea is to make it evident if someone tries to access the root outside of an authorized ceremony. While a full key ceremony might be overkill for a small lab, understanding these practices is important. Even in a lab, you can simulate some aspects (for learning), like documenting the procedure of taking the root online to sign the request and then locking it away. These practices greatly increase the trust in a production PKI by ensuring transparency and accountability for critical operations. Backup and Recovery Plans: Both CAs’ data should be regularly backed up: For the Root CA: since it’s rarely online, backup after any change. Typically, you’d back up the CA’s private key and certificate once (right after setup or any renewal). Store this securely offline (separate from the server itself). Also back up the CA database if it ever issues more than one cert (for root it might not issue many). For the Issuing CA: schedule automated backups of the CA database and private key. You can use the built-in certutil -backup or Windows Server Backup (which is aware of the AD CS database). Keep backups secure and test restoration procedures. Having a documented recovery procedure for the CA is crucial for continuity. Also consider backup of templates and any scripts. Maintain spare hardware or VMs in case you need to restore the CA on new hardware (especially for the root, having a procedure to restore on a new machine if the original is destroyed). Security maintenance: Apply OS updates to the CAs carefully. For the offline root, patch it offline if possible (offline servicing or connecting it briefly to a management network). For the issuing CA, treat it as a critical infrastructure server: limit its exposure (firewall it so only required services are reachable), monitor its event logs (enable auditing for Certificate Services events, which can log each issuance and revocation), and employ anti-malware tools with caution (whitelisting the CA processes to avoid interference). Also, periodically review the CA’s configuration and certificate templates to ensure they meet current security standards (for example, deprecate any weak cryptography or adjust validity periods if needed). By following these maintenance steps and best practices, your two-tier PKI will remain secure and trustworthy over time. Remember that PKI is not “set and forget” – it requires operational diligence, but the payoff is a robust trust infrastructure for your organization’s security. Additional AD CS Features and References Active Directory Certificate Services provides more capabilities than covered in this basic lab. Depending on your needs, you might explore: Certificate Templates: We touched on templates; they are a powerful feature on Enterprise CAs to enforce standardized certificate settings. Administrators can create custom templates for various use cases (SSL, S/MIME email, code signing) and control enrollment permissions. Understanding template versions and permissions is key for enterprise deployments. (Refer to Microsoft’s documentation on Certificate template concepts in Windows Server for details on how templates work and can be customized.) Web Services for Enrollment: In scenarios with remote or non-domain clients, AD CS offers the Certificate Enrollment Web Service (CES) and Certificate Enrollment Policy Web Service (CEP) role services. These allow clients to fetch enrollment policy information and request certificates over HTTP or HTTPS, even when not connected directly to the domain. They work with the certificate templates to enable similar auto-enrollment experiences over the web. See Microsoft’s guides on the Certificate Enrollment Web Service overview and Certificate Enrollment Policy Web Service overview for when to use these. Network Device Enrollment Service (NDES): This AD CS role service implements the Simple Certificate Enrollment Protocol (SCEP) to allow devices like routers, switches, and mobile devices to obtain certificates from the CA without domain credentials. NDES acts as a proxy (Registration Authority) between devices and the CA, using one-time passwords for authentication. If you need to issue certificates to network equipment or MDM-managed mobile devices, NDES is the solution. Microsoft Docs provide a Network Device Enrollment Service(NDES) overview and even details on using a policy module with NDES for advanced scenarios (like customizing how requests are processed or integrating with custom policies). Online Responders (OCSP): As mentioned, an Online Responder can be configured to answer revocation status queries more efficiently than CRLs, especially useful if your CRLs grow large or you have high-volume certificate validation (VPNs, etc.). AD CS’s Online Responder role service can be installed on a member server and configured with the OCSP Response Signing certificate from your Issuing CA. Monitoring and Auditing: Windows Servers have options to audit CA events. Enabling auditing can log events such as certificate issuance, revocation, or changes to the CA configuration. These logs are important in enterprise PKI to track who did what (for compliance and security forensics). Also, tools like the PKI Health Tool (pkiview.msc) and PowerShell cmdlets (like Get-CertificationAuthority, Get-CertificationAuthorityCertificate) can help monitor the health and configuration of your CAs. Conclusion By following this guide, you have set up a secure two-tier PKI environment consisting of an offline Root CA and an online Issuing CA. This design, which uses an offline root, is considered a security best practice for enterprise PKI deployments because it reduces the risk of your root key being compromised. With the offline Root CA acting as a hardened trust anchor and the enterprise Issuing CA handling day-to-day certificate issuance, your lab PKI can issue certificates for various purposes (HTTPS, code signing, user authentication, etc.) in a way that models real-world deployments. As you expand this lab or move to production, always remember that PKI security is as much about process as technology. Applying strict controls to protect CA keys, keeping software up to date, and monitoring your PKI’s health are all part of the journey. For further reading and official guidance, refer to these Microsoft documentation resources: 📖 AD CS PKI Design Considerations: PKI design considerations using Active Directory Certificate Services in Windows Server helps in planning a PKI deployment (number of CAs, hierarchy depth, naming, key lengths, validity periods, etc.). This is useful to read when adapting this lab design to a production environment. It also covers configuring CDP/AIA and why offline roots usually don’t need delta CRLs. 📖 AD CS Step-by-Step Guides: Microsoft’s Test Lab Guide Test Lab Guide: Deploying an AD CS Two-Tier PKI Hierarchy walk through a similar scenario.
