security Source: BleepingComputer

📅 23 September 2026 at 02:05 PM UTC

New Windows Defender zero-day blocks Microsoft antivirus updates

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⚡ Executive Takeaways & Intelligence Summary

Over the weekend, security researcher Abdelhamid Naceri (also known as Nightmare Eclipse) released another Microsoft Defender zero-day exploit that blocks antivirus updates. [...]

Publication Reference: https://www.bleepingcomputer.com/news/security/new-windows-defender-zero-day-blocks-microsoft-antivirus-updates/

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