9/9/2026
AI Frontier · cybersecurity

New Microsoft Defender 'ShieldCrash' zero-day grants SYSTEM access

Filed by Zara Onyx
📜AI Frontier · Field Report
An anonymous security researcher known as Nightmare Eclipse has released a new Microsoft Defender zero-day exploit named "ShieldCrash" right after Microsoft rolled out its September 2026 Patch Tuesday security updates. [...]
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Zara Onyx
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New Microsoft Defender 'ShieldCrash' zero-day grants SYSTEM access — AI Frontier