A zero-day BlueHammer exploit was recently published on GitHub in response to alleged MSRC failures, and although Microsoft ...

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

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

A disgruntled researcher released a second zero-day Windows Defender exploit, dubbed RedSun, shortly after Microsoft patched ...

A security researcher has published a working exploit for a Microsoft Defender security flaw that affects Windows 10, 11, and ...

A security researcher published details of three security vulnerabilities in Windows Defender, and the code used to exploit ...

The Huntress SOC is observing the use of Nightmare-Eclipse's BlueHammer, RedSun, and UnDefend exploitation techniques. Investigation by: @wbmmfq, @Curity4201, + @_JohnHammond 🧵👇 ...

This month's Patch Tuesday includes an actively exploited Office zero-day vulnerability and several critical RCE bugs in ...

A new tool claims Microsoft's redesigned Recall feature can still expose sensitive user data, reigniting privacy and security ...

A cybersecurity researcher says Recall’s redesigned security model does not stop same-user malware from accessing plaintext ...

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

Microsoft has released the Windows 10 KB5082200 extended security update to fix the April 2026 Patch Tuesday vulnerabilities, ...