Cybernews

Disgruntled hacker drops second zero-day Windows Defender exploit just hours after Microsoft patches first one

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

Recently leaked Windows zero-days now exploited in attacks

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

Unpatched Microsoft Defender flaw lets hackers gain admin access

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

Angry Hacker Drops Microsoft Zero-Day Exploit, 1 Billion Users Warned

A security researcher frustrated with Microsoft has released the BlueHammer Windows zero-day exploit, telling the company, “I ...