Although the team with Microsoft moved swiftly to patch the BlueHammer vulnerability, other exploits still threaten Microsoft ...

Microsoft has resolved an issue that breaks multiple Microsoft 365 Defender features using the network data reporting service after installing July's Windows Server updates. The Microsoft 365 Defender ...

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

"You'll need a new app to open this windowsdefender link" appears when Windows cannot open the Windows Security app using the ...

Windows Defender is the default antivirus in Windows PC, which protects the PC against various threats such as malware, viruses, and others. While Windows Defender keeps track of all its actions to ...

The U.S. Cybersecurity and Infrastructure Security Agency has mandated federal agencies patch the actively exploited BlueHammer vulnerability in Microsoft Defender by May 6 or stop using the software.

CVE-2026-32202 actively exploited after April 27 advisory fix, exposing NTLMv2 hashes via zero-click SMB authentication.

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

Microsoft announced that security administrators will soon be able to block external users from sending messages, calls, or meeting invitations to members of their organization via Teams. Microsoft is ...

New PoC shows how Microsoft Defender can be tricked into rewriting malicious files into protected locations, enabling ...

The BlueHammer, RedSun and UnDefend flaws put all Windows users at risk since they turn the operating system’s antivirus ...

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