Microsoft has patched 112 vulnerabilities in January 2026, including CVE-2026-20805, a Desktop Window Manager zero-day that ...

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 ...

Today is Microsoft's December 2025 Patch Tuesday, which fixes 57 flaws, including one actively exploited and two publicly disclosed zero-day vulnerabilities. This Patch Tuesday also addresses three ...

This tool adds a highly trained virtual analyst to your security team in educational environments where IT personnel and resources are limited. Industries worldwide are trying to address the shortage ...

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 ...