Daily Defender NewsWeek of 27 July 2026 recorded 4 updated Microsoft Defender documentation changes and 2 relevant Message Center announcements. The most active areas were Office 365, Defender XDR, Identity.
Endpoint · Endpoint protectionUpdated Microsoft Defender documentation in defender-endpoint/api/get-vulnerability-by-id.md.
Identity · Identity protectionUpdated Microsoft Defender documentation in defender-for-identity/migrate-from-ata-overview.md.
Defender XDR · Endpoint protectionThe upgrade to Microsoft Defender for Endpoint on Linux build 101.26052.0009 for FIPS-enabled RHEL 8 and 9 devices has been paused due to issues. The message is now outdated and can be disregarded. No action is needed if already upgraded without problems.
Office 365 · Email and collaborationUpdated Microsoft Defender documentation in defender-office-365/email-authentication-arc-configure.md.
Defender XDR · Email and collaborationMicrosoft Defender for Office 365 will introduce an opt-in Safe Attachments policy to quarantine emails with password-protected attachments that cannot be scanned. Administrators can control release, users can self-release with passwords, and the feature supports various file types. Rollout begins August 2026 worldwide.
Review the linked Microsoft Learn changes that apply to your managed platforms, policies, applications, and rollout plans. The archive preserves the source diff for verification.
This period briefing was assembled from the tracked Microsoft Learn and Message Center changes.
Microsoft Defender for Office 365 will introduce an opt-in Safe Attachments policy to quarantine emails with password-protected attachments that cannot be scanned. Administrators can control release, users can self-release with passwords, and the feature supports various file types. Rollout begins August 2026 worldwide.
The upgrade to Microsoft Defender for Endpoint on Linux build 101.26052.0009 for FIPS-enabled RHEL 8 and 9 devices has been paused due to issues. The message is now outdated and can be disregarded. No action is needed if already upgraded without problems.
Updated Microsoft Defender documentation in defender-endpoint/api/get-vulnerability-by-id.md.
Updated Microsoft Defender documentation in defender-office-365/tenant-allow-block-list-about.md.
Updated Microsoft Defender documentation in defender-office-365/email-authentication-arc-configure.md.
Updated Microsoft Defender documentation in defender-for-identity/migrate-from-ata-overview.md.
