Microsoft has resolved a bug that caused Windows Defender to crash after a recent security update, resulting in 0xc0000005 ...

A bad security intelligence update causes Microsoft Defender to crash during Full and Quick Scans on some PCs. Upgrading to ...

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

Microsoft says a new Defender capability isolated a compromised device and stopped a ransomware attack in 128 seconds. Security experts explain what it means—and its limits.

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

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

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

BTR Reforged uses Defender's signed BTR.sys with an administrator account and SeLoadDriverPrivilege for kernel file and ...

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

The PoC posted by Nightmare Eclipse, who has been feuding with Microsoft for months, enables an attacker with any level of ...

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

Microsoft Defender (previously Windows Defender) has been a part of the Windows operating system since the early 2000s, with Microsoft improving and iterating on it up to the present — and presumably ...