Over 1 billion Windows users at risk after disgruntled security research leaks Defender zero-days

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

Hackers are abusing unpatched Windows security flaws to hack into organizations

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

Researchers warn Microsoft Defender vulnerability is already being exploited

A security researcher known as Chaotic Eclipse recently disclosed a vulnerability dubbed "Red Sun" affecting Microsoft ...
Hackaday

This Week In Security: Docker Auth, Windows Tools, And A Very Full Patch Tuesday

CVE-2026-34040 lets attackers bypass some Docker authentication plugins by allowing an empty request body. Present since 2024, this bug was caused by a previous fix to the auth workflow. In the ...
The Hacker News

Three Microsoft Defender Zero-Days Actively Exploited; Two Still Unpatched

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

Best Antivirus Software for Windows PCs in 2026

Discover the highest ranked antivirus programs for Windows 10 and 11. See whether you need to save or splurge to protect your ...