While there weren’t any genuine zero-day vulnerabilities to patch in May’s Patch Tuesday update, the fallout since then has ...

Microsoft pushed out-of-band patches on May 21, 2026, for two actively exploited Windows Defender zero-days — one that lets a ...

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

Most modern Windows PCs rely on Microsoft Defender as their first line of defense against malware. Over the years, it has evolved into a capable and often underrated antivirus that blocks a wide range ...

Hackers have broken into at least one organization using Windows vulnerabilities published online by a disgruntled security researcher over the last two weeks, according to a cybersecurity firm. On ...