Zero Out Your Incident Queue - Human-led Microsoft Defender Experts for XDR
Offload high-severity incidents, gain full visibility into every investigation, and follow clear, guided remediation steps so you can contain attacks quickly and confidently, day or night. Extend your security operations with always-on managed detection and response and proactive threat hunting, so you can uncover hidden risks early, stop threats threats they spread, and strengthen your defenses to prevent future attacks. Maynald Savatdy, Microsoft Defender Expert, shows how to detect, contain, and hunt threats across your environment with support from human experts. Stay protected at all hours. Extend security coverage to nights, weekends, & holidays without staffing new shifts. Defender Experts for XDR includes managed detection and response and proactive threat hunting. Reduce response time and uncertainty. Take guided remediation steps from human experts instead of guessing what to do next. See how Microsoft Defender Experts for XDR works. Uncover hidden threats early. Microsoft Defender Experts proactively hunts across your environment and acts on contextual alerts before exploits become public. See it here. QUICK LINKS: 00:00 — Microsoft Defender Experts 00:54–24/7 Security Coverage 01:35 — Visibility & guidance actions 03:34 — Incidents and alerts 04:25 — Social engineering attack 05:36 — Defender Experts for hunting 06:34 — Wrap up Link References Get started at https://aka.ms/DefenderExperts Unfamiliar with Microsoft Mechanics? As Microsoft’s official video series for IT, you can watch and share valuable content and demos of current and upcoming tech from the people who build it at Microsoft. Subscribe to our YouTube: https://www.youtube.com/c/MicrosoftMechanicsSeries Talk with other IT Pros, join us on the Microsoft Tech Community: https://techcommunity.microsoft.com/t5/microsoft-mechanics-blog/bg-p/MicrosoftMechanicsBlog Watch or listen from anywhere, subscribe to our podcast: https://microsoftmechanics.libsyn.com/podcast Keep getting this insider knowledge, join us on social: Follow us on Twitter: https://twitter.com/MSFTMechanics Share knowledge on LinkedIn: https://www.linkedin.com/company/microsoft-mechanics/ Enjoy us on Instagram: https://www.instagram.com/msftmechanics/ Loosen up with us on TikTok: https://www.tiktok.com/@msftmechanics Video Transcript: -What if your security team had elite defenders available 24/7 ready to detect, respond, investigate, and hunt threats across your environment? Every day you may need to look at dozens or hundreds of incidents, and anyone of them could pose an existential threat to your organization. This is where our human-led Microsoft Defender Experts for XDR, our managed detection and response service and team come in, to work through those incidents for you. They work behind the scenes to bring deep expertise in triaging and investigating incidents, augmenting your SOC team. And you can track progress directly in Microsoft Defender. -In fact, I’m part of the global Microsoft Defender Experts team and we represent Microsoft’s own experienced security analysts and threat hunters. People who live and breathe cybersecurity. We’ve managed some of the worst situations and developed deep understanding of all the ways systems and endpoints can be compromised. We work around the clock, including after hours, weekends, and holidays, to augment your team. Defender Experts for XDR also includes a dedicated Defender Experts for Hunting service. This augments your team with our trained engineers that proactively hunt down risks and vulnerabilities across different entry points and services. If you are part of a larger organization with an expert SecOps team, you can also get Defender Experts for Hunting as a standalone service. Our human-led team of experts will work with bespoke tooling and queries, including AI. -In fact, we’ll uncover and work through advanced threats using up-to-the-second intel that automated systems might miss and correlate data from live raw sources that may not yet have been published. Let’s start in Microsoft Defender. You’re looking at the Incidents view, and normally, to stay protected, you’d need to triage these incidents and work them yourself. These are legitimate attacks unique to your organization and infrastructure. There could be dozens or hundreds of active incidents. The Defender Experts team will triage and work the incident queue for you as an opt-in managed service to augment your security team. In fact, right from the Home screen of the Defender portal, you’ll see the latest incidents that have been worked through by our Defender Experts team. These are stats for the number of investigated incidents and how many were resolved directly or with your help. -Let’s click in to see all incidents for the ones that need your attention. This status means that the recommended actions needs to be taken by someone on your team. This could be due to credential resets or policy configuration changes only your team may be authorized to perform. If I click into the incident for initial access involving one user, right up top you’ll see that it’s been assigned to Defender Experts. By default, any medium or high severity incident will get our attention. You can see the managed response provided by the Defender Expert who worked on the incident. There’s a detailed summary of what happened, how the incident started, the scope of entities and services impacted, any discovered indicators of compromise, in this case, email information and a malicious phishing URL, along with which entities were investigated. And below that are details for the Advanced Hunting Queries that were used. -Here you can see our Defender analyst was able to query emails containing the suspicious URL, which devices connected to that URL, the emails from the compromised sender account, then finally who clicked on the URL in the emails from that compromised account. And you can see the Awaited Actions below that you as the customer would need to take care of, like taking action to create an indicator that automatically blocks traffic to the URL, a password reset for the affected user, and requiring the user to sign in again by revoking their sessions. So you have full visibility into what our Defender Experts worked on and any guidance for actions that you need to take. Additionally, our Defender Experts can raise incidents and alerts themselves when suspicious activity is detected. This incident with the Defender Experts prefix was raised as both an incident and alert by our team. It’s a Teams Phishing Activity involving initial access, execution, and privilege escalation. -From the Managed Response summary, we can see the details of the attack, which the team was able to contain, and if I scroll down, you can see the specific actions completed. They first disabled the targeted account, then created an indicator to block the suspicious domain, and they were able to block incoming Teams messages from the malicious actor along with all of the related IP addresses. So as you saw, these are hands-on interventions. When something suspicious pops up, we don’t just send an alert. Our team digs in, validates what’s happening, and guides you through any containment and remediation steps that we can’t directly perform. -Let me expand on a social engineering attack to gain remote access, similar to this Teams incident I showed earlier, and how we addressed it. It started when we investigated an alert that was triggered when a user installed a remote viewing and management tool on their work device. At first glance, this type of software isn’t inherently malicious. It’s often used for legitimate IT support. However, our analysts noticed a pattern that didn’t align with normal behavior. The installation followed a series of junk emails sent to the user, an email bombing attack, and a Teams message claiming to be from Technical Support. Once installed, the adversary began using legitimate system paths to gain deeper access. Our team quickly disabled the user and attacker accounts and lines of communication, isolated the device and notified the customer, stopping the attack before it spread further into the network. -Leveraging Microsoft Threat Intelligence and access to global security data for broader querying, we identified the threat actor. Following the containment, our hunters then initiated proactive searches across other customer tenants and issued intelligence-driven notifications to prevent the spread and further compromise. This is just a recent example of how attackers combine social engineering with their tactics, techniques, and procedures. Beyond reactive support, Defender Experts for Hunting, as the name suggests, proactively hunts for threats in your environment and across the ecosystem. This the Defender Experts custom alert. It’s an overview of suspicious activity, complete with context, severity, and details. Clicking into the Summary tab, there’s a tile view of alerts, recommended queries, evidence and more. Last July, before any public CVE was announced, our team observed unusual activity on a SharePoint server where the W3WP executable was seen invoking PowerShell commands with Base64 encoding, behavior that typically signals an exploit attempt. -Using advanced hunting queries, we were able to confirm this was not just an isolated event. Based on our queries, we could confirm the attackers were actively probing weaknesses in other environments. We used the results to find the list of over 100 organizations that were vulnerable to this attack and proactively warned them of their exposure even before the exploit became widely known with guidance on how to address it. -So, whether you’re a small team looking to scale your security operations, or a large enterprise needing deeper threat insights, Microsoft Defender Experts gives you the confidence of knowing elite defenders are watching your back. To learn more or get started, head to aka.ms/DefenderExperts and keep watching Microsoft Mechanics for the latest tech updates. Thanks for watching.Securing Data with Microsoft Purview IRM + Defender: A Hands-On Lab
Hi everyone I recently explored how Microsoft Purview Insider Risk Management (IRM) integrates with Microsoft Defender to secure sensitive data. This lab demonstrates how these tools work together to identify, investigate, and mitigate insider risks. What I covered in this lab: Set up Insider Risk Management policies in Microsoft Purview Connected Microsoft Defender to monitor risky activities Walkthrough of alerts triggered → triaged → escalated into cases Key governance and compliance insights Key learnings from the lab: Purview IRM policies detect both accidental risks (like data spillage) and malicious ones (IP theft, fraud, insider trading) IRM principles include transparency (balancing privacy vs. protection), configurable policies, integrations across Microsoft 365 apps, and actionable alerts IRM workflow follows: Define policies → Trigger alerts → Triage by severity → Investigate cases (dashboards, Content Explorer, Activity Explorer) → Take action (training, legal escalation, or SIEM integration) Defender + Purview together provide unified coverage: Defender detects and responds to threats, while Purview governs compliance and insider risk This was part of my ongoing series of security labs. Curious to hear from others — how are you approaching Insider Risk Management in your organizations or labs?
Beyond Visibility: Hybrid Identity Protection with Microsoft Entra & Defender for Identity
In a previous blog, we explored how Microsoft Entra and Defender for Identity form a powerful duo for hybrid identity protection. But visibility alone isn’t enough. To truly defend your organization, you need to operationalize that visibility—turning insights into action, and strategy into security outcomes. Let’s explore how to take your hybrid identity protection to the next level. From Detection to Response: Building a Unified Identity SOC Security teams often struggle with fragmented signals across cloud and on-prem environments. Defender for Identity and Entra solve this by feeding identity-based alerts into Microsoft 365 Defender and Microsoft Sentinel, enabling: Centralized incident response: Investigate identity threats alongside endpoint, email, and cloud signals. Automated playbooks: Trigger actions like disabling accounts or enforcing stricter access policies. Advanced hunting: Use KQL queries to uncover stealthy attacks like domain dominance or golden ticket abuse. This unified approach transforms your SOC from reactive to proactive. Strengthening Identity Posture with Entra ID Protection Once threats are detected, Entra ID Protection helps you contain and prevent them: Risk-based Conditional Access: Automatically block or challenge risky sign-ins based on Defender for Identity signals. User risk remediation: Force password resets or MFA enrollment for compromised accounts. Policy tuning: Use insights from past incidents to refine access controls and reduce false positives. This adaptive security model ensures that your defenses evolve with the threat landscape. To learn more about these and additional policy-driven security mechanisms, please visit: Risk policies - Microsoft Entra ID Protection | Microsoft Learn Least Privilege at Scale with Entra ID Governance Identity protection isn’t just about stopping attacks—it’s about minimizing the blast radius. Entra ID Governance helps enforce least privilege by: Automating access reviews: Regularly audit who has access to sensitive resources. Just-in-time access: Grant temporary permissions only when needed. Entitlement management: Control access to apps and groups with policy-based workflows. By reducing unnecessary access, you make lateral movement harder for attackers—and easier for auditors. To learn more about least privilege, please visit: Understanding least privilege with Microsoft Entra ID Governance | Microsoft Learn Real-Time Insights with Microsoft Sentinel Sentinel supercharges your hybrid identity protection with: Custom dashboards: Visualize risky users, sign-in anomalies, and privilege escalations. Threat intelligence fusion: Correlate identity signals with external threat feeds. Data connectors: Stream Entra and Defender for Identity logs for deep analysis and long-term retention. This gives you the clarity to spot patterns and the context to act decisively. To learn more about Microsoft Sentinel, please visit: What is Microsoft Sentinel SIEM? | Microsoft Learn Next Steps: Operationalize Your Identity Strategy To move from visibility to action: Deploy Defender for Identity sensors across all domain controllers. Integrate with Microsoft 365 Defender and Sentinel for unified threat detection. Enable risk-based Conditional Access in Entra to respond to identity threats in real time. Implement least privilege policies using Entra ID Governance. Use Sentinel for advanced hunting and analytics to stay ahead of attackers. Final Thoughts Hybrid identity protection isn’t a checkbox—it’s a continuous journey. By operationalizing the integration between Microsoft Entra and Defender for Identity, you empower your security teams to detect, respond, and prevent identity threats with precision and speed.Comprehensive Identity Protection—Across Cloud and On-Premises
Hybrid IT environments, identity is the new perimeter—and protecting it requires visibility across both cloud and on-premises systems. While Microsoft Entra secures cloud identities with intelligent access controls, Microsoft Defender for Identity brings deep insight into your on-premises Active Directory. Together, they form a powerful duo for comprehensive identity protection. Why Hybrid Identity Protection Matters Most organizations haven’t fully moved to the cloud. Legacy systems, on-prem applications, and hybrid user scenarios are still common, and attackers know it. They exploit these gaps using techniques like: Pass-the-Hash and Pass-the-Ticket attacks Credential stuffing and brute-force logins Privilege escalation and lateral movement Without visibility into on-prem identity activity, these threats can go undetected. That’s where Defender for Identity steps in. What Is Microsoft Defender for Identity? Defender for Identity is part of Microsoft Defender XDR—a cloud-based solution that monitors on-premises Active Directory for suspicious behavior. It uses behavioral analytics and threat intelligence to detect identity-based attacks in real time. Key capabilities: Detects compromised accounts and insider threats Monitors lateral movement and privilege escalation Surfaces risky users and abnormal access patterns Integrates with Microsoft 365 Defender and Sentinel for unified response Why It Pairs Perfectly with Microsoft Entra Microsoft Entra (formerly Azure AD) protects cloud identities with features like Conditional Access, Multifactor Authentication, and Identity Governance. But Entra alone can’t see what’s happening in your on-prem AD. By combining Entra and Defender for Identity, you get: End-to-end visibility across cloud and on-prem environments Real-time threat detection for suspicious activities like lateral movement, privilege escalation, and domain dominance Behavioral analytics to identify compromised accounts and insider threats Integrated response capabilities to contain threats quickly and minimize impact Actionable insights that help strengthen your identity posture and reduce risk Together, they deliver comprehensive identity protection—giving you the clarity, control, and confidence to defend against modern threats. Real-World Impact Imagine a scenario where an attacker gains access to a legacy on-prem account and begins moving laterally across systems. Defender for Identity detects the unusual behavior and flags the account as risky. Entra then blocks cloud access based on Conditional Access policies tied to that risk signal—stopping the attack before it spreads. Getting Started Deploy Defender for Identity sensors on your domain controllers Install a sensor - step-by-step instructions to install Defender for Identity sensors on your domain controllers to begin monitoring on-premises identity activity. Activate the sensor on a domain controller - Guidance on activating the installed sensor to ensure it starts collecting and analyzing data. Deployment overview - A high-level walkthrough of the Defender for Identity deployment process, including prerequisites and architecture. Connect Defender for Identity to Microsoft 365 Defender Integration in the Microsoft Defender portal - Learn how to connect Defender for Identity to Microsoft 365 Defender for centralized threat detection and response. Pilot and deploy Defender for Identity - Best practices for piloting Defender for Identity in your environment before full-scale deployment. Enable risk-based Conditional Access in Entra Configure risk policies in Entra ID Protection - Instructions for setting up risk-based policies that respond to identity threats in real time. Risk-based access policies overview - An overview of how Conditional Access uses risk signals to enforce adaptive access controls. Use Entra ID Governance to enforce least privilege Understanding least privilege with Entra ID Governance - Explains how to apply least privilege principles using Entra’s governance tools. Best practices for secure deployment - Recommendations for securely deploying Entra ID Governance to minimize identity-related risks. Integrate both with Microsoft Sentinel for advanced hunting Microsoft Defender XDR integration with Sentinel - How to connect Defender for Identity and other Defender components to Microsoft Sentinel for unified security operations. Send Entra ID data to Sentinel - Instructions for streaming Entra ID logs and signals into Sentinel for deeper analysis. Microsoft Sentinel data connectors - A catalog of available data connectors, including those for Entra and Defender for Identity, to expand your threat detection capabilities. Final Thoughts It's the perfect time to evaluate your identity protection strategy. By pairing Microsoft Entra with Defender for Identity, you gain full visibility across your hybrid environment—so you can detect threats early, respond quickly, and protect every identity with confidence. Ready to strengthen your identity perimeter? Start by deploying Defender for Identity and configuring Entra policies today.Cybersecurity Starts Here: Strong Passwords for Nonprofits
In the nonprofit world, trust is everything. Whether you're protecting donor data, safeguarding beneficiary information, or managing internal systems, your digital security matters. One of the simplest—and most powerful—ways to protect your organization is by using strong passwords. These tools form the first line of defense against cyber threats and help ensure your mission stays on track. Why Strong Passwords Matter Weak passwords are like unlocked doors—they invite trouble. Cybercriminals often exploit simple or reused passwords to gain unauthorized access, impersonate staff, steal sensitive data, or disrupt operations. A strong password acts as a digital lock: hard to guess, harder to crack. Characteristics of a strong password: At least 12 characters long A mix of uppercase, lowercase, numbers, and symbols Unique for every account Not based on personal info (no pet names, birthdays, or favorite sports teams!) Microsoft Tools That Help You Stay Secure Microsoft offers nonprofit-friendly tools to help enforce strong password policies and protect user identities: Microsoft Entra ID (formerly Azure Active Directory) Centralized identity and access management Multi-factor authentication (MFA) to prevent unauthorized logins Conditional access policies and role-based access control Microsoft 365 Security Center Monitor password-related alerts and suspicious sign-ins Enforce password expiration and complexity policies View security recommendations tailored to your organization Microsoft Defender for Endpoint Detects brute-force password attacks and credential theft Protects devices from malware and phishing attempts Integrates with Microsoft 365 for unified threat response Tips for Nonprofit Teams Building a culture of cybersecurity starts with small, consistent actions: Make it policy: Require strong passwords use across your organization Train your team: Host a lunch-and-learn or share a how-to guide on password safety Enable MFA: Add multi-factor authentication for all accounts Audit regularly: Review access and update credentials when staff roles change Clean up old accounts: Remove unused logins and shared credentials Your Mission Deserves Protection Cybersecurity isn’t just an IT issue—it’s a mission-critical priority. By adopting strong password practices, you’re taking a proactive step to protect your people, your data, and your impact. Microsoft’s ecosystem offers scalable, nonprofit-friendly tools to help you build a secure foundation—so you can focus on what matters most: serving your community.Strengthen Your Security Posture This October with Smarter Endpoint Protection
As organizations accelerate digital transformation, endpoints have become the frontline of defense—and the most frequent target. From phishing emails to fileless malware, attackers are exploiting gaps in visibility and response. It’s no longer enough to react after the fact. You need security that’s proactive, intelligent, and built for scale. Microsoft Defender for Endpoint delivers exactly that—combining real-time detection, automated remediation, and deep threat analytics to help you stay ahead of adversaries. Detection: Smarter Than Signature-Based Security Defender for Endpoint uses a multi-layered detection strategy that goes far beyond traditional methods: Behavioral Analysis: It monitors how apps and users behave, flagging anomalies like privilege escalation or lateral movement. Machine Learning & AI: Defender analyzes trillions of signals daily to identify patterns that indicate emerging threats—even zero-day attacks. Threat Intelligence: Backed by Microsoft’s global security graph, it detects known malware, ransomware, and nation-state tactics in real time. Endpoint Detection & Response (EDR): It continuously collects and analyzes endpoint data to surface suspicious activity and indicators of compromise. Response: Automated, Precise, and Scalable Once a threat is detected, Defender doesn’t just alert—it acts: Automated Investigation & Remediation: Defender uses AI to investigate alerts, determine root cause, and automatically contain or remove threats. Attack Timeline: Security teams get a visual map of the attack’s progression, helping them understand how it started and spread. Live Response: Analysts can remotely connect to compromised devices, run scripts, collect forensic data, and take corrective action. Integration with Microsoft Sentinel: Defender feeds threat data into your SIEM for broader visibility and correlation across your environment. Real-World Impact Take the example of a nonprofit organization targeted by a phishing campaign. Defender for Endpoint detected unusual PowerShell activity, isolated the device, and triggered an automated investigation. Within minutes, the threat was neutralized—no data loss, no downtime. Why It Matters During Cybersecurity Awareness Month, it’s the perfect time to evaluate your endpoint security. Defender for Endpoint doesn’t just detect threats—it empowers your team to respond with speed and confidence. Getting Started with Microsoft Security 1. Review Your Microsoft Secure Score - Start by assessing your current security posture in the Microsoft 365 Defender portal. Secure Score provides a prioritized list of recommendations to improve your organization's security based on real usage and configurations. Link: Assess your security posture through Microsoft Secure Score - Microsoft Defender XDR | Microsoft Learn 2. Enable Automated Investigation & Remediation (AIR) - Reduce response time and manual effort by turning on AIR. It automatically investigates alerts, determines root causes, and takes remediation actions—helping you contain threats faster. Link: Use automated investigations to investigate and remediate threats - Microsoft Defender for Endpoint | Microsoft Learn 3. Explore Threat Analytics in Defender - Threat Analytics provides expert-driven insights into emerging threats, vulnerabilities, and attack techniques—tailored to your environment. Use it to stay ahead of adversaries and understand how global threats impact your organization. Link: Threat analytics in Microsoft Defender XDR - Microsoft Defender XDR | Microsoft Learn 4. Connect Microsoft Defender to Sentinel - Integrate Defender with Microsoft Sentinel to unify your security operations. This enables centralized monitoring, advanced hunting, and automated incident response across your entire digital estate. Link: Connect Microsoft Defender XDR data to Microsoft Sentinel | Microsoft Learn This Cybersecurity Awareness Month, empower your organization to stay one step ahead of evolving threats. With Microsoft Defender for Endpoint, you gain intelligent, automated protection and deep visibility—so you can detect, respond, and neutralize risks before they turn into breaches.
Microsoft Defender (for Business) not showing onboarded device via Intune
I am having some real fun with Devices not being shown in Microsoft Defender (for Business) after following the necessary instructions provided by Microsoft. Devices are not showing in the Microsoft Defender portal. I have used the local onboarding scripting method and gone directly through Intune. Would there be a conflict running the two? The account being used to perform these tasks is a Global Admin (even with Security Administrator rights). In respect of Intune, the Connection service between Intune and Defender for Endpoint (EDR) is fine. I have used a preconfigured EDR policy option to onboard the device, and I have checked the registry key HKLM\SOFTWARE\Policies\Microsoft\Windows Advanced Threat Protection, which states an OnboardingInfo value, indicating that a device has been onboarded to Microsoft Defender for Endpoint. I do have an issue relating to Default Device Compliance Policy - Has a compliance policy assigned and a policy issue for 'create local admin user account', but Intune is saying the device is compliant. Would these issues cause an issue, and what else should I check for?Deep Dive: Insider Risk Management in Microsoft Purview
Hi everyone I recently explored the Insider Risk Management (IRM) workflow in Microsoft Purview and how it connects across governance, compliance, and security. This end-to-end process helps organizations detect risky activities, triage alerts, investigate incidents, and take corrective action. Key Phases in the IRM Workflow: Policy: Define rules to detect both accidental (data spillage) and malicious risks (IP theft, fraud, insider trading). Alerts: Generate alerts when policies are violated. Triage: Prioritize and classify alerts by severity. Investigate: Use dashboards, Content Explorer, and Activity Explorer to dig into context. Action: Take remediation steps such as user training, legal escalation, or SIEM integration. Key takeaways from my lab: Transparency is essential (balancing privacy vs. protection). Integration across Microsoft 365 apps makes IRM policies actionable. Defender + Purview together unify detection + governance for insider risk. This was part of my ongoing security lab series. Curious to hear from the community — how are you applying Insider Risk Management in your environments or labs?
Microsoft Defender for Endpoint (MDE) Live Response and Performance Script.
Importance of MDE Live Response and Scripts Live Response is crucial for incident response and forensic investigations. It enables analysts to: Collect evidence remotely. Run diagnostics without interrupting users. Remediate threats in real time. For more information on MDE Live Response visit the below documentation. Investigate entities on devices using live response in Microsoft Defender for Endpoint - Microsoft Defender for Endpoint | Microsoft Learn PowerShell scripts enhance this capability by automating tasks such as: Performance monitoring. Log collection. Configuration validation. This automation improves efficiency, consistency, and accuracy in security operations. For more details on running performance analyzer visit the below link. Performance analyzer for Microsoft Defender Antivirus - Microsoft Defender for Endpoint | Microsoft Learn While performance analyzer is run locally on the system to collect Microsoft Defender Anti-Virus performance details , in this document we are describing on running the performance analyzer from MDE Live Response console. This is a situation where Security administrators do not have access to the servers managed by Infra administrators. Prerequisites Required Roles and Permissions To use Live Response in Microsoft Defender for Endpoint (MDE), specific roles and permissions are necessary. The Security Administrator role, or an equivalent custom role, is typically required to enable Live Response within the portal. Users must possess the “Manage Portal Settings” permission to activate Live Response features. Permissions Needed for Live Response Actions Active Remediation Actions under Security Operations: Take response actions Approve or dismiss pending remediation actions Manage allowed/blocked lists for automation and indicators Unified Role-Based Access Control (URBAC): From 16/02/2025, new customers must use URBAC. Roles are assigned to Microsoft Entra groups. Access must be assigned to device groups for Live Response to function properly. Setup Requirements Enable Live Response: Navigate to Advanced Features in the Defender portal. Only users with the “Manage Portal Settings” permission can enable this feature. Supported Operating System Versions: Windows 10/11 (Version 1909 or later) Windows Server (2012 R2 with KB5005292, 2016 with KB5005292, 2019, 2022, 2025) macOS and Linux (specific minimum versions apply) Actual Script Details and Usage The following PowerShell script records Microsoft Defender performance for 60 seconds and saves the output to a temporary file: # Get the default temp folder for the current user $tempPath = [System.IO.Path]::GetTempPath() $outputFile = Join-Path -Path $tempPath -ChildPath "DefenderTrace.etl" $durationSeconds = 60 try { Write-Host "Starting Microsoft Defender performance recording for $durationSeconds seconds..." Write-Host "Recording will be saved to: $outputFile" # Start performance recording with duration New-MpPerformanceRecording -RecordTo $outputFile -Seconds $durationSeconds Write-Host "Recording completed. Output saved to $outputFile" } catch { Write-Host "Failed to start or complete performance recording: $_" } 🔧 Usage Notes: Run this script in an elevated PowerShell session. Ensure Defender is active, and the system supports performance recording. The output .etl file can be analyzed using performance tools like Windows Performance Analyzer. Steps to Initiate Live Response Session and Run the script. Below are the steps to initiate a Live Response session from Security.Microsoft.com portal. Below screenshot shows that console session is established. Then upload the script file to console library from your local system. Type “Library” to list the files. You can see that script got uploaded to Library. Now you execute the script by “run <file name>” command. Output of the script gets saved in the Library. Run “getfile <path of the file>” to get the file downloaded to your local system download folder. Then you can run Get-MpPerformanceReport command from your local system PowerShell as shown below to generate the report from the output file collected in above steps. Summary and Benefits This document outlines the use of MDE Live Response and PowerShell scripting for performance diagnostics. The provided script helps security teams monitor Defender performance efficiently. Similar scripts can be executed from Live Response console including signature updates , start/stop services etc. These scripts are required as a part of security investigation or MDE performance troubleshooting process. Benefits: Faster incident response through remote diagnostics. Improved visibility into endpoint behaviour. Automation of routine performance checks. Enhanced forensic capabilities with minimal user disruption.
