Updated Microsoft Defender documentation in defender-xdr/advanced-hunting-find-ransomware.md.
Day in brief
Migrate To Sensor V3 leads 78 Defender updates
19 May 2026 recorded 2 new, 72 updated, 4 removed Microsoft Defender documentation changes. The most active areas were Endpoint, Office 365, Identity.
- Migrate To Sensor V3
Identity · Identity protectionUpdated Microsoft Defender documentation in defender-for-identity/deploy/migrate-to-sensor-v3.md.
- Reports Email Security
Office 365 · Email and collaborationUpdated Microsoft Defender documentation in defender-office-365/reports-email-security.md.
- Security Analyst Agent
Defender XDR · GeneralUpdated Microsoft Defender documentation in defender-xdr/security-analyst-agent.md.
- Tvm Security Baselines
Vulnerability Management · GeneralUpdated Microsoft Defender documentation in defender-vulnerability-management/tvm-security-baselines.md.
- Generate playbooks using AI in Microsoft Sentinel
Sentinel · Cloud and workloadsUpdated Microsoft Defender documentation in sentinel/automation/generate-playbook.md.
This period briefing was assembled from the tracked Microsoft Learn and Message Center changes.
78 updates
Microsoft Defender XDR
8 updatesUpdated Microsoft Defender documentation in defender-xdr/custom-detection-rules.md.
Updated Microsoft Defender documentation in defender-xdr/custom-detection-rules.md.
Updated Microsoft Defender documentation in defender-xdr/custom-detection-manage.md.
Security Analyst Agent
UpdatedUpdated Microsoft Defender documentation in defender-xdr/security-analyst-agent.md.
Defender Security For Ai
UpdatedUpdated Microsoft Defender documentation in defender-xdr/security-for-ai/defender-security-for-ai.md.
Custom detections overview
UpdatedUpdated Microsoft Defender documentation in defender-xdr/custom-detections-overview.md.
Whats New
UpdatedUpdated Microsoft Defender documentation in defender-xdr/whats-new.md.
Microsoft Defender for Endpoint
30 updates
Updated Microsoft Defender documentation in defender-endpoint/microsoft-defender-endpoint.md.
Updated Microsoft Defender documentation in defender-endpoint/microsoft-defender-endpoint.md.
Updated Microsoft Defender documentation in defender-endpoint/defender-deployment-tool-windows.md.
Updated Microsoft Defender documentation in defender-endpoint/configure-wdac-script-enforcement-mde.md.
Updated Microsoft Defender documentation in defender-endpoint/microsoft-defender-endpoint-mac.md.
Updated Microsoft Defender documentation in defender-endpoint/microsoft-defender-endpoint-mac.md.
Updated Microsoft Defender documentation in defender-endpoint/microsoft-defender-endpoint-windows.md.
Updated Microsoft Defender documentation in defender-endpoint/configure-ai-agent-runtime-protection.md.
Enable Network Protection
UpdatedUpdated Microsoft Defender documentation in defender-endpoint/enable-network-protection.md.
Updated Microsoft Defender documentation in defender-endpoint/configure-ai-agent-runtime-protection.md.
Discover Local Ai Agents
UpdatedUpdated Microsoft Defender documentation in defender-endpoint/discover-local-ai-agents.md.
Microsoft Defender Endpoint
UpdatedUpdated Microsoft Defender documentation in defender-endpoint/microsoft-defender-endpoint.md.
Updated Microsoft Defender documentation in defender-endpoint/microsoft-defender-endpoint-linux.md.
Protect Ai Agents Overview
UpdatedUpdated Microsoft Defender documentation in defender-endpoint/protect-ai-agents-overview.md.
Protect Ai Agents Overview
UpdatedUpdated Microsoft Defender documentation in defender-endpoint/protect-ai-agents-overview.md.
Updated Microsoft Defender documentation in defender-endpoint/defender-deployment-tool-windows.md.
Updated Microsoft Defender documentation in defender-endpoint/microsoft-defender-endpoint-windows.md.
Protect Ai Agents Overview
UpdatedUpdated Microsoft Defender documentation in defender-endpoint/protect-ai-agents-overview.md.
Run Av Scan
UpdatedUpdated Microsoft Defender documentation in defender-endpoint/api/run-av-scan.md.
Updated Microsoft Defender documentation in defender-endpoint/whats-new-in-microsoft-defender-endpoint.md.
Defender Compatibility
RemovedRemoved Microsoft Defender documentation in defender-endpoint/defender-compatibility.md.
Discover Local Ai Agents
UpdatedUpdated Microsoft Defender documentation in defender-endpoint/discover-local-ai-agents.md.
Discover Local Ai Agents
UpdatedUpdated Microsoft Defender documentation in defender-endpoint/discover-local-ai-agents.md.
Removed Microsoft Defender documentation in defender-endpoint/microsoft-defender-endpoint-android.md.
Removed Microsoft Defender documentation in defender-endpoint/microsoft-defender-endpoint-ios.md.
Removed Microsoft Defender documentation in defender-endpoint/supported-capabilities-by-platform.md.
Updated Microsoft Defender documentation in defender-endpoint/microsoft-defender-endpoint-windows.md.
Updated Microsoft Defender documentation in defender-endpoint/microsoft-defender-endpoint-mac.md.
Added Microsoft Defender documentation in defender-endpoint/microsoft-defender-endpoint-windows.md.
Protect Ai Agents Overview
UpdatedUpdated Microsoft Defender documentation in defender-endpoint/protect-ai-agents-overview.md.
Microsoft Defender for Office 365
20 updatesReports Email Security
UpdatedUpdated Microsoft Defender documentation in defender-office-365/reports-email-security.md.
Updated Microsoft Defender documentation in defender-office-365/step-by-step-guides/how-to-handle-false-positives-in-microsoft-defender-for-office-365.md.
Updated Microsoft Defender documentation in defender-office-365/submissions-user-reported-messages-custom-mailbox.md.
Updated Microsoft Defender documentation in defender-office-365/submissions-user-reported-messages-custom-mailbox.md.
Updated Microsoft Defender documentation in defender-office-365/quarantine-policies.md.
Updated Microsoft Defender documentation in defender-office-365/submissions-user-reported-messages-custom-mailbox.md.
Updated Microsoft Defender documentation in defender-office-365/outbound-spam-policies-configure.md.
Updated Microsoft Defender documentation in defender-office-365/submissions-user-reported-messages-custom-mailbox.md.
Anti Spam Policies Configure
UpdatedUpdated Microsoft Defender documentation in defender-office-365/anti-spam-policies-configure.md.
Updated Microsoft Defender documentation in defender-office-365/quarantine-policies.md.
Updated Microsoft Defender documentation in defender-office-365/quarantine-admin-manage-messages-files.md.
Updated Microsoft Defender documentation in defender-office-365/quarantine-admin-manage-messages-files.md.
Quarantine End User
UpdatedUpdated Microsoft Defender documentation in defender-office-365/quarantine-end-user.md.
Quarantine End User
UpdatedUpdated Microsoft Defender documentation in defender-office-365/quarantine-end-user.md.
Updated Microsoft Defender documentation in defender-office-365/anti-spam-policies-asf-settings-about.md.
Anti Spam Protection About
UpdatedUpdated Microsoft Defender documentation in defender-office-365/anti-spam-protection-about.md.
Updated Microsoft Defender documentation in defender-office-365/anti-spam-spam-confidence-level-scl-about.md.
Updated Microsoft Defender documentation in defender-office-365/create-safe-sender-lists-in-office-365.md.
Updated Microsoft Defender documentation in defender-office-365/submissions-user-reported-messages-custom-mailbox.md.
Added Microsoft Defender documentation in defender-office-365/anti-spam-policies-troubleshooting.md.
Microsoft Defender for Identity
16 updates
Deploy Sensor V3
UpdatedUpdated Microsoft Defender documentation in defender-for-identity/deploy/deploy-sensor-v3.md.
Deploy Sensor V3
UpdatedUpdated Microsoft Defender documentation in defender-for-identity/deploy/deploy-sensor-v3.md.
Deploy Sensor V3
UpdatedUpdated Microsoft Defender documentation in defender-for-identity/deploy/deploy-sensor-v3.md.
Deploy Sensor V3
UpdatedUpdated Microsoft Defender documentation in defender-for-identity/deploy/deploy-sensor-v3.md.
Deploy Sensor V3
UpdatedUpdated Microsoft Defender documentation in defender-for-identity/deploy/deploy-sensor-v3.md.
Deploy Sensor V3
UpdatedUpdated Microsoft Defender documentation in defender-for-identity/deploy/deploy-sensor-v3.md.
Deploy Sensor V3
UpdatedUpdated Microsoft Defender documentation in defender-for-identity/deploy/deploy-sensor-v3.md.
Deploy Sensor V3
UpdatedUpdated Microsoft Defender documentation in defender-for-identity/deploy/deploy-sensor-v3.md.
Migrate To Sensor V3
UpdatedUpdated Microsoft Defender documentation in defender-for-identity/deploy/migrate-to-sensor-v3.md.
Migrate To Sensor V3
UpdatedUpdated Microsoft Defender documentation in defender-for-identity/deploy/migrate-to-sensor-v3.md.
Whats New
UpdatedUpdated Microsoft Defender documentation in defender-for-identity/whats-new.md.
Troubleshooting Known Issues
UpdatedUpdated Microsoft Defender documentation in defender-for-identity/troubleshooting-known-issues.md.
Troubleshooting Known Issues
UpdatedUpdated Microsoft Defender documentation in defender-for-identity/troubleshooting-known-issues.md.
Whats New
UpdatedUpdated Microsoft Defender documentation in defender-for-identity/whats-new.md.
Whats New
UpdatedUpdated Microsoft Defender documentation in defender-for-identity/whats-new.md.
Whats New
UpdatedUpdated Microsoft Defender documentation in defender-for-identity/whats-new.md.
Microsoft Sentinel
2 updatesUpdated Microsoft Defender documentation in sentinel/automation/generate-playbook.md.
Updated Microsoft Defender documentation in sentinel/compare-analytics-rules-custom-detections.md.
Tvm Security Baselines
UpdatedUpdated Microsoft Defender documentation in defender-vulnerability-management/tvm-security-baselines.md.
Updated Microsoft Defender documentation in unified-secops-platform/microsoft-threat-actor-naming.md.