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Claude Mythos Preview Discovers Thousands of Zero-Days Across Every Major OS and Browser — Autonomously Chains Linux Kernel Exploits
Anthropic's technical assessment published April 7 reveals Claude Mythos Preview autonomously identified thousands of previously unknown zero-day vulnerabilities in 'every major operating system and every major web browser,' including some undetected for decades. In Linux kernel testing, Mythos filtered 100 CVEs from 2024-2025 to 40 exploitable candidates and built privilege escalation exploits for over half, then autonomously chained multiple flaws to achieve complete machine control. Anthropic has privately warned top government officials that Mythos makes large-scale cyberattacks 'significantly more likely this year.'
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