Over the weekend, security researcher Abdelhamid Naceri (also known as Nightmare Eclipse) released another Microsoft Defender zero-day exploit that blocks antivirus updates.

Microsoft Defender security intelligence update 1.459.576.0 is rolling out under KB2267602. Here is how to check your version ...

Not quite an EDR-killer, but the proof-of-concept cyber technique creates a silent virus detection gap while service runs normally, no exploit required.

BigDiskBuster can block Microsoft Defender updates by filling disk space, leaving detection content stale; no patch or advisory exists.

Microsoft will distribute Defender for Endpoint EDR updates through Microsoft Update, enabling EDR security improvements to be released independently of monthly Windows operating system updates. The ...