Three Defender zero-days exploited since April 10, 2026, enabling privilege escalation and DoS, forcing isolation of affected ...

Three proof-of-concept exploits are being used in active attacks against Microsoft's built-in security platform; two are ...

Microsoft wants Windows 11 owners to stop worrying about buying antivirus software. In statements reported by PCMag and ...

A researcher known as "Chaotic Eclipse" has published a proof-of-concept exploit for a second Microsoft Defender zero-day, ...

Threat actors have been exploiting the BlueHammer Microsoft Defender vulnerability as a zero-day to gain System privileges.

Windows 11 security is now complete, with Defender replacing third-party antivirus through built-in real-time and behavioral ...

RedSun exploit targets Microsoft Defender zero-day, granting SYSTEM access on fully patched Windows systems with no patch ...

Microsoft Defender is an excellent tool for security teams managing cybersecurity risks within their organization. However, a tool alone cannot be enough in many cases, especially those which require ...

Defender is 'usually sufficient,' it says in a blog post that might rile up the antivirus industry.

A security vulnerability was recently discovered in Microsoft Defender, the first-party Windows 11 antivirus tool used by ...

Threat actors are exploiting three recently disclosed Windows security vulnerabilities in attacks aimed at gaining SYSTEM or ...