Updated Microsoft Defender documentation in defender-xdr/get-started-xdr.md.
Day in brief
Create custom detection rules leads 4 Defender updates
27 February 2026 recorded 4 updated Microsoft Defender documentation changes. The most active areas were Defender XDR, Endpoint.
- Create custom detection rules
Defender XDR · Hunting and detectionUpdated Microsoft Defender documentation in defender-xdr/custom-detection-rules.md.
- Get started with Microsoft Defender Experts for XDR
Defender XDR · FundamentalsUpdated Microsoft Defender documentation in defender-xdr/get-started-xdr.md.
- Configure Extension File Exclusions Microsoft Defender Antivirus
Endpoint · Endpoint protectionUpdated Microsoft Defender documentation in defender-endpoint/configure-extension-file-exclusions-microsoft-defender-antivirus.md.
- Microsoft Defender Experts for XDR
Defender XDR · GeneralUpdated Microsoft Defender documentation in defender-xdr/dex-xdr-overview.md.
This period briefing was assembled from the tracked Microsoft Learn and Message Center changes.
4 updates
Microsoft Defender XDR
3 updatesUpdated Microsoft Defender documentation in defender-xdr/dex-xdr-overview.md.
Updated Microsoft Defender documentation in defender-xdr/custom-detection-rules.md.
Microsoft Defender for Endpoint
1 updateUpdated Microsoft Defender documentation in defender-endpoint/configure-extension-file-exclusions-microsoft-defender-antivirus.md.