The newly disclosed Windows Defender flaw, tracked as CVE-2026-50656, could let attackers escalate privileges on fully ...

The feud between "NightmareEclipse" and Microsoft continues to hold unpleasant surprises for the Windows ecosystem. The ...

Windows Defender zero-day CVE-2026-50656 — known as RoguePlanet — has been patched by Microsoft 29 days after researcher ...

Microsoft is working to resolve a bug that causes Defender for Endpoint to incorrectly tag some devices' BIOS (Basic Input/Output System) firmware as outdated, prompting users to update it. In a ...

The zero-day "nightmare" apparently isn't over for Microsoft, as a disgruntled researcher who's been feuding with the company for the past three months has dropped yet another proof-of-concept (PoC) ...

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 ...

Ars Technica has been separating the signal from the noise for over 25 years. With our unique combination of technical savvy and wide-ranging interest in the technological arts and sciences, Ars is ...

A new security vulnerability was found in the compression mechanism of the Microsoft Server Message Block 3.1.1 (SMBv3) network communication protocol used by multiple versions of Windows 10 and ...

Q: Are Windows Defender warnings that pop up with a phone number legit? A: Microsoft’s built-in security tool has improved over the years, and it still blocks plenty of everyday threats. But the ...

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