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Update: Added statement from Microsoft to the end of this article. A security researcher has released a new Microsoft Defender zero-day exploit named "RoguePlanet" just hours after Microsoft fixed two ...

Certificate Expiration: The KEK CA 2011 certificate expired on June 24, 2026, stopping unpatched systems from receiving new Secure Boot revocations. Trust Chain Preservation: The update replaces 2011 ...

KB5094126 fixed 208 security flaws but introduced bugs affecting the Recycle Bin, BitLocker recovery, OneDrive, and system stability across all Windows versions.

This method involves modifying a Registry value called DisableAntiSpyware. In older versions of Windows, this policy key was used by OEMs and IT administrators to disable Microsoft Defender Antivirus ...

Do you still need third-party antivirus on your Windows PC?

At times, you may not be able to turn Real-time protection on or off in Windows Defender on Windows 11. There could be many reasons for this error, so we have compiled some common causes along with ...

BlueHammer became public on April 2 in an unusual fashion. A researcher using the names Chaotic Eclipse and Nightmare Eclipse ...

With phishing and AI-driven identity attacks rising, Windows Hello PIN security depends on TPM-backed keys, enterprise ...

CISA confirmed on Monday that ransomware gangs are now exploiting a Microsoft Defender privilege escalation vulnerability, dubbed BlueHammer, that has previously been abused in zero-day attacks.

Microsoft extended consumer Windows 10 security updates to 2027, with a no-cost option for eligible PCs and separate rules ...

Recently, Microsoft delivered its latest Defender patches for Windows 11 ISOs. These definitions are released from time to time alongside the general security updates available during Patch Tuesday.