Microsoft Defender

Everything Threat Times has reported about Microsoft Defender: 2 stories, newest first. Part of our Cyber Attacks coverage.

Malware & Ransomware

Gentlemen Ransomware Disables Defender, Destroys Backups to Block Recovery

Threat TimesOct 21, 2026

Acronis researchers detail how the Gentlemen group disables Windows security, clears logs and deletes shadow copies to complicate incident response efforts.

Cyber Attacks

Proof-of-Concept Technique Blocks Microsoft Defender Updates While Service Runs

Threat TimesOct 9, 2026

A new cyber technique creates a silent detection gap by blocking updates to Microsoft Defender while leaving the service running normally.