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.

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

A newly disclosed Microsoft Defender vulnerability, dubbed SheildBreak, could allow attackers to gain full system access. The ...

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

Security researchers have disclosed new "Plug and Pwn" attacks that abuse the Windows Plug and Play feature to trigger Windows into installing vulnerable or insecure vendor software and gain SYSTEM ...

Keyboard shortcuts are used to perform various tasks in a Windows operating system. The purpose of keyboard shortcuts is to increase productivity by performing quick operations. In this article, we ...

A researcher released ShieldBreak, an unverified Windows Defender zero-day that allegedly grants attackers SYSTEM-level privileges on fully patched systems. Nightmare Eclipse says ShieldBreak bypasses ...