The BlueHammer, RedSun and UnDefend flaws put all Windows users at risk since they turn the operating system’s antivirus ...

A security vulnerability was recently discovered in Microsoft Defender, the first-party Windows 11 antivirus tool used by ...

A security researcher published details of three security vulnerabilities in Windows Defender, and the code used to exploit ...

A researcher known as "Chaotic Eclipse" has published a proof-of-concept exploit for a second Microsoft Defender zero-day, ...

New PoC shows how Microsoft Defender can be tricked into rewriting malicious files into protected locations, enabling ...

A security researcher frustrated with Microsoft has released the BlueHammer Windows zero-day exploit, telling the company, “I ...

Microsoft’s April 2026 Patch Tuesday fixes 165 vulnerabilities, including two zero-days, in one of the company’s largest ...

The Huntress SOC is observing the use of Nightmare-Eclipse's BlueHammer, RedSun, and UnDefend exploitation techniques. Investigation by: @wbmmfq, @Curity4201, + @_JohnHammond 🧵👇 ...

A disgruntled researcher released a second zero-day Windows Defender exploit, dubbed RedSun, shortly after Microsoft patched ...

For a clickable, per-patch breakdown, check out the SANS Internet Storm Center Patch Tuesday roundup. Running into problems ...

Microsoft this week released one of the largest Patch Tuesday bundles in its history, delivering fixes for 163 new Microsoft CVEs in a month that includes three zero-days and eight Critical-rated ...

Microsoft has detailed a fix for a bug affecting tons of versions of Windows, but applying the patch is not as simple as going through Windows Update. In the past couple of days, reports about about a ...