Microsoft Defender XDR will add six new built-in alert tuning rules for Microsoft Defender for Endpoint starting February 8, 2026, to reduce low-priority alerts. Rules are visible for review until February 18, then activate by default but can be disabled anytime by admins. No action needed for default use.
Day in brief
Configure security settings in Microsoft Defender for Endpoint on Linux leads 18 Defender updates
6 February 2026 recorded 17 updated Microsoft Defender documentation changes and 1 relevant Message Center announcement. The most active areas were Office 365, Endpoint, Vulnerability Management.
- Configure security settings in Microsoft Defender for Endpoint on Linux
Endpoint · Endpoint protectionUpdated Microsoft Defender documentation in defender-endpoint/linux-preferences.md.
- Fixed Reported Inaccuracies
Vulnerability Management · GeneralUpdated Microsoft Defender documentation in defender-vulnerability-management/fixed-reported-inaccuracies.md.
- Migrate To Defender For Office 365 Setup
Office 365 · Email and collaborationUpdated Microsoft Defender documentation in defender-office-365/migrate-to-defender-for-office-365-setup.md.
- Mdo Integrate Security ServiceOffice 365 · Email and collaboration
Updated Microsoft Defender documentation in defender-office-365/mdo-integrate-security-service.md.
- (Public Preview) New built in alert tuning rules for Microsoft Defender for Endpoint in Microsoft Defender XDR
Defender XDR · Incidents and responseMicrosoft Defender XDR will add six new built-in alert tuning rules for Microsoft Defender for Endpoint starting February 8, 2026, to reduce low-priority alerts. Rules are visible for review until February 18, then activate by default but can be disabled anytime by admins. No action needed for default use.
This period briefing was assembled from the tracked Microsoft Learn and Message Center changes.
18 updates
Microsoft Defender XDR
1 updateMicrosoft Defender for Endpoint
2 updatesUpdated Microsoft Defender documentation in defender-endpoint/linux-preferences.md.
Linux Preferences
UpdatedUpdated Microsoft Defender documentation in defender-endpoint/linux-preferences.md.
Microsoft Defender for Office 365
13 updatesUpdated Microsoft Defender documentation in defender-office-365/migrate-to-defender-for-office-365-setup.md.
Updated Microsoft Defender documentation in defender-office-365/mdo-integrate-security-service.md.
Updated Microsoft Defender documentation in defender-office-365/step-by-step-guides/defense-in-depth-guide.md.
Updated Microsoft Defender documentation in defender-office-365/attack-simulation-training-insights.md.
Defense In Depth Guide
UpdatedUpdated Microsoft Defender documentation in defender-office-365/step-by-step-guides/defense-in-depth-guide.md.
Mdo Deployment Guide
UpdatedUpdated Microsoft Defender documentation in defender-office-365/mdo-deployment-guide.md.
Updated Microsoft Defender documentation in defender-office-365/submissions-user-reported-messages-custom-mailbox.md.
Updated Microsoft Defender documentation in defender-office-365/attack-simulation-training-faq.md.
Updated Microsoft Defender documentation in defender-office-365/attack-simulation-training-faq.md.
Mdo Sec Ops Guide
UpdatedUpdated Microsoft Defender documentation in defender-office-365/mdo-sec-ops-guide.md.
Updated Microsoft Defender documentation in defender-office-365/attack-simulation-training-insights.md.
Defense In Depth Guide
UpdatedUpdated Microsoft Defender documentation in defender-office-365/step-by-step-guides/defense-in-depth-guide.md.
Mdo Deployment Guide
UpdatedUpdated Microsoft Defender documentation in defender-office-365/mdo-deployment-guide.md.
Fixed Reported Inaccuracies
UpdatedUpdated Microsoft Defender documentation in defender-vulnerability-management/fixed-reported-inaccuracies.md.
Fixed Reported Inaccuracies
UpdatedUpdated Microsoft Defender documentation in defender-vulnerability-management/fixed-reported-inaccuracies.md.