Over the weekend, security researcher Abdelhamid Naceri (also known as Nightmare Eclipse) released another Microsoft Defender zero-day exploit that blocks antivirus updates.
Microsoft has a new Defender anti-virus update for Windows 11 and 10 images. The new update patches several flaws.
Morning Overview on MSN
New zero-day bug can silently block Windows Defender’s virus updates
A researcher who calls himself Nightmare Eclipse published a free tool on September 19, 2026, that can quietly stop Windows ...
This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. New warnings are a mistake. Microsoft has now confirmed that new warnings alarming Windows ...
Microsoft has resolved a known issue that causes incorrect alerts warning that Defender Antivirus was turned off after installing recent updates.
Microsoft says misleading Windows Security pop-ups claiming Defender Antivirus is turned off are caused by a glitch, with a fix in the works.
After installing the latest Defender Antivirus update for Windows 11, users have started reporting that their operating ...
The majority of the updates that come through Windows Update are for Windows Defender, and for good reason. Windows Defender helps make your antimalware and other security protections stronger.
Serial Microsoft zero-day leaker NightmareEclipse has found another way to mess with Windows Defender, this time by stopping ...
Discover the best antivirus software for 2026. We tested top picks comparing malware protection, phishing tools, features, ...
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