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

Microsoft patched two actively exploited Defender zero-days affecting Windows systems and security components.

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

Microsoft fixed a Defender false positive that flagged legitimate DigiCert certificates as malware, disrupting Windows trust stores for some IT teams.

Here's what those enrolled in the Windows 10 Extended Security Updates program need to know about each monthly security ...

Microsoft Secure Boot certificates from 2011 begin expiring in June 2026. Here’s how to check whether your Windows PC has the ...

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