The Nightmare-Eclipse and Microsoft saga continues with another major Windows Defender exploit following 'RoguePlanet.' ...

Check Point researchers found that Microsoft’s legitimate remediation driver can be weaponized for kernel-level file and ...

Microsoft is working on a security patch for the "ShieldBreak" zero-day vulnerability disclosed last week by security ...

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

What we know so far: Cybersecurity researchers have uncovered at least three new vulnerabilities that could potentially allow attackers to gain system privileges even on patched Windows computers.

The Windows Defender Boot-Time Removal driver can be misused by attackers to compromise Windows systems.

Microsoft’s August Patch Tuesday fixes about 400 security flaws, including an actively exploited Windows zero-day and multiple 9.8-rated RCE bugs.

Nightmare Eclipse has released a proof of concept called ShieldBreak, a zero-day flaw in Defender that allows privilege escalation to SYSTEM with no patch yet available. The exploit bypasses Microsoft ...

Microsoft is developing a patch for the ShieldBreak Defender zero-day, which can let local attackers gain SYSTEM privileges ...

Microsoft has released fresh security patches to resolve critical vulnerabilities in Azure, Entra ID, Exchange, and Fabric.

Microsoft patched the LegacyHive Windows zero-day, CVE-2026-62832, which could let local attackers gain administrator privileges.

Security researchers reproduced ShieldBreak, a claimed Windows Defender zero-day that manipulates cloud hydration and ...