NightmareEclipse's latest zero-day leaves Microsoft Defender stuck in the past
Serial Microsoft zero-day leaker NightmareEclipse has found another way to mess with Windows Defender, this time by stopping the antivirus from updating itself. The security researcher, also known as Abdelhamid Naceri, released a proof-of-concept…
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ImpactMinor 28/100
Why it mattersRule-based estimate: no strong signals; trust 6/10.
RegionsGlobal
Published4 h ago (Tue, 22 Sep 2026 16:36:00 GMT)
RetrievedTue, 22 Sep 2026 17:00:56 GMT via rss
ClassifiedTue, 22 Sep 2026 17:01:14 GMT by heuristic