New Security Detection Report in the Teams Admin Center
Microsoft published a new Security Detection Report in the Teams admin center to provide unified visibility into messaging security detections across Microsoft Teams.
24. August 2026
Tagged: Defender for Office 365
Microsoft Defender can quarantine emails with unscannable attachments
Security administrators can now enable automatic quarantine for emails containing password-protected attachments that Defender for Office 365 cannot scan.
13. August 2026
Report a security concern now covers Teams meetings and group calls
Microsoft is extending the report a security concern feature to Teams meetings and group calls, helping organizations detect phishing, impersonation, and scams.
13. August 2026
Microsoft is adding new Intune and Defender features to Microsoft 365 Enterprise licenses
Microsoft is now adding new Intune and Defender features to Microsoft 365 Enterprise licenses. Check your licenses for new service plans and use my Microsoft Graph samples to verify their activation status.
15. June 2026
Report a suspicious call in Microsoft Teams
Microsoft is adding a built-in option for users to report suspicious one-to-one Teams calls directly from their call history, with submitted reports surfacing in the Microsoft Defender portal.
3. May 2026
New Defender XDR permission for viewing and downloading quarantined emails
A new Defender XDR RBAC permission gives administrators read and download access to quarantined emails without granting broader access to email content.
18. April 2026
New Defender XDR permission scopes access to user-reported malware and phishing emails
Defender XDR is adding a new permission that allows security teams to preview and download only the emails users have reported as malware or phishing, without requiring broader access to all email content in the organization.
11. April 2026
Microsoft 365 E3 and E5 customers get Intune Suite and Defender capabilities in July 2026
Microsoft published an FAQ including timelines for when Microsoft 365 E3 and E5 customers can expect the additional Intune Suite capabilities, and when Microsoft 365 E3 customers will receive Defender for Office 365 Plan 1.
3. April 2026
Defender Unified RBAC will be enabled for new tenants with Defender for Office 365 Plan 2
Microsoft is enabling Unified RBAC for new tenants with Defender for Office 365 Plan 2 starting at the end of May 2026.
22. March 2026
Defender for Office 365 now alerts on malicious URL clicks in Microsoft Teams
Defender for Office 365 URL click alerts are expanding to Microsoft Teams. When users click malicious links in Teams messages, alerts now appear in the Defender portal for faster detection and investigation.
14. March 2026
Microsoft Defender Tenant Allow/Block List can now block external Teams users and domains
Microsoft has enhanced the Defender Tenant Allow/Block List to support blocking external Teams users and domains, centralizing external access controls across Microsoft 365.
22. February 2026
Reporting suspicious Teams messages comes to Defender for Office 365 Plan 1
Microsoft is expanding Teams message reporting to Defender for Office 365 Plan 1, allowing users to report suspicious and false-positive messages starting February 2026.
25. January 2026
Microsoft will enable new messaging safety protections in Teams starting January 2026
Microsoft will enable new messaging safety protections in Teams for tenants using the default configuration starting January 2026.
21. December 2025
Zero-hour auto-purge (ZAP) in Teams for organizations with Defender for Office 365 Plan 1
Microsoft will enable ZAP in Teams for organizations with Defender for Office 365 Plan 1 starting in January 2026, with an opt-out option available for security admins.
30. November 2025