Overview On January 14, NSFOCUS CERT detected that Microsoft released the January Security Update patch, which fixed 112 security issues involving widely used products such as Windows, Microsoft ...

And almost 50 more than last month.

Including three zero-days.

Microsoft has released an emergency patch for CVE-2026-21509, a zero-day Office vulnerability under active exploitation that ...

Update, April 30, 2025: This story, originally published April 28, has been updated with further information regarding the hotpatching security update service for Windows Server 2025 users, as well as ...

‘We’re going through this transformation where [Sentinel is] and will always be a SIEM, but now it's a broader security platform,’ a Microsoft executive tells CRN. Microsoft is unveiling an array of ...

Microsoft has announced new Windows 365 security defaults starting in the second half of 2025 and affecting newly provisioned and reprovisioned Cloud PCs. The company said these changes include ...

PCWorld reports that Microsoft released critical security updates fixing 15 Office vulnerabilities, including 14 remote code execution flaws affecting Excel, Word, Outlook, and Access. One zero-day ...

Congratulations to the winners of the 2026 Microsoft Security Excellence Awards that recognize the innovative defenders who ...

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 ...