Ukraine's Computer Emergency Response Team (CERT) says that Russian hackers are exploiting CVE-2026-21509, a recently patched vulnerability in multiple versions of Microsoft Office.

Microsoft announced new or improved AI security agents at Ignite. Security agent functionality is surfaced within Microsoft's relevant management portal. The agents are free to all Copilot Security ...

Microsoft is working on a new Teams security feature that will analyze suspicious traffic with external domains to help IT administrators tackle potential security threats. As explained in a Microsoft ...