Nightmare Eclipse has released a new Microsoft Defender zero-day exploit named "ShieldBreak" after Microsoft released the August 2026 Patch Tuesday security updates.

ShieldBreak is a claimed patch bypass for Defender flaw CVE-2026-50656, with a PoC tested on Windows 11 25H2 and Server 2025.

The 'ShieldBreak' flaw can let an attacker use Windows Defender to escalate their privileges on the OS. Microsoft previously ...

This is the latest zero-day released by security researcher Nightmare Eclipse, despite Microsoft publicly threatening to take legal action against them.

Microsoft's August 2026 Patch Tuesday security update addresses 42 critical vulnerabilities across Windows, Office, and Exchange Server.

A new Microsoft Defender zero-day called ShieldBreak can reportedly grant SYSTEM privileges on fully patched Windows 11 systems.

The Windows firewall is a fine place to start, but there are better options.

CISA confirmed today that ransomware gangs have begun abusing a high-severity Microsoft SharePoint remote code execution ...

First Akira Safe Mode attack disables endpoint detection and response but fails to encrypt, Huntress says - SiliconANGLE ...

Russian hackers are exploiting hotel Wi-Fi networks at various locations that attract corporate travelers to compromise ...

Microsoft has patched 421 CVEs on August 2026 Patch Tuesday, including an elevation of privilege flaw exploited as a zero-day.

Fake The Odyssey downloads are already spreading Lumma Stealer malware, putting passwords, browser sessions and crypto ...