A credential-stealing worm hidden in more than 400 compromised npm packages automatically spread across software ecosystems ...

Change logs for security intelligence update version 1.455.499.0 This page lists newly added and updated threat detections included in security intelligence updates for Microsoft Defender Antivirus ...

Read how to apply Zero Trust for AI with new assessments, DevSecOps guidance, and practical tools to secure AI agents, code, ...

Microsoft Defender automatically isolated a compromised QNET endpoint in 129 seconds, stopping a multi-stage attack before the payload could persist or spread.

Get news, updates, and insights about Microsoft's integrated cloud platform for cloud solutions from the team of experts at The Microsoft Cloud Blog .

Microsoft continually updates security intelligence in antimalware products to cover the latest threats and to constantly tweak detection logic, enhancing the ability of Microsoft Defender Antivirus ...

This year, the Microsoft Bounty Program awarded more than $20 million to 562 security researchers, the highest total payout and the largest number of researchers recognized in the program's history.

Storm-2945, a sub-cluster of the Russian threat actor Midnight Blizzard, has been observed compromising the sign-in portals ...

Explore July 2026 Microsoft Security updates, including agentic defense, AI threat protection, identity, data security, and ...

What's the Tea, a new podcast from Microsoft, explores the pace at which leaders are transforming their organizations with AI ...