Microsoft pushed emergency patches this week for two zero-day vulnerabilities in Windows Defender, the antivirus software ...

Microsoft has confirmed an emergency security update as CISA warns that two new Defender zero-days are being exploited by ...

Microsoft is testing a new Defender for Endpoint capability that will automatically isolate compromised endpoints to thwart ...

On Wednesday, Microsoft started rolling out security patches for two Defender vulnerabilities that have been exploited in ...

Every federal civilian agency running Microsoft Defender now faces a two-week countdown to fix two actively exploited security flaws. CISA added CVE-2026-41091 and CVE-2026-45498 to its Known ...

Microsoft has disclosed that a privilege escalation and a denial-of-service flaw in Defender has come under active ...

Ahead of Build 2026, Microsoft detailed new AI-focused security tools and agent protections designed for large-scale ...

As threats become more coordinated and faster to execute, endpoint protection has become the proving ground for modern ...

Cybercriminals abuse trusted Intel driver to gain kernel access and shut down Windows Defender, enabling undetected malware ...

Windows Defender has several security settings, including some you need to switch on to get the utmost protection. Here's why.

Microsoft claims Windows Defender is all the protection you need. I've been testing antivirus software for decades, and the evidence—not to mention the threats it can't protect you from—says otherwise ...