Microsoft has issued a rare and urgent warning to Windows users worldwide: a foundational layer of PC security, embedded deep ...

The announcement follows Anthropic’s debut of its leading-edge Mythos model, which the company says has already found ...

Microsoft has good news for administrators: while some organizations now pay for security updates on older Windows versions, the inconsistent quality remains free.… The company has confirmed that ...

CISA is warning about ongoing exploitation of a 2008 bug in multiple versions of Excel.

Windows users are, understandably, given the size of the operating system market share, a prime target for attackers of all kinds, from nation-state espionage actors to hackers and scammers. Windows ...

‘This ecosystem is mature, professional enough to let you put the customer first,’ Microsoft CVP David Weston says. Upcoming limited access to a Windows endpoint security platform for third-party ...

Microsoft assigned CVE-2026-21520 to a Copilot Studio prompt injection vulnerability and patched it in January — but in Capsule Security's testing, data exfiltrated anyway. Here's what security ...

As cyber threats become more advanced and persistent, organizations must go beyond basic security measures to protect their ...

Update, May 11, 2025: This story, originally published May 9, has been updated with more details on the move towards greater cloud Common Vulnerabilities and Exposures (CVE) transparency by both ...

A researcher known as "Chaotic Eclipse" has published a proof-of-concept exploit for a second Microsoft Defender zero-day, dubbed "RedSun," in the past two weeks, protesting how the company works with ...

Microsoft has confirmed a new issue causing newly introduced Windows security warnings to display incorrectly when opening ...