Windows Security (formerly Windows Defender) is the built-in antivirus tool bundled with the operating system. It has saved ...

Microsoft updates Defender in Windows install media to block threats during setup and close early security gaps.

RedSun exploit targets Microsoft Defender zero-day, granting SYSTEM access on fully patched Windows systems with no patch available.

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

The exploit uses an insecure behavior of Windows Defender and a file API to secure system rights. It is still unpatched.

Microsoft released another Windows 11 emergency update yesterday to address an issue preventing users from installing the March optional update released on March 26.

According to the official KB5079391 change log, the rollout was paused because users are seeing an "error 0x80073712" message ...

New out-of-band Windows 11 update fixes March's installation errors - how to get it ...

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

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Earlier this week, Microsoft released KB5079391, this month's non-security update for Windows 11 version 24H2 and 25H2. As usual, the latest non-security update brought various feature updates and ...