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Ars Technica AIPublished: Apr 15, 2026, 07:00 JST

UK government's Mythos AI becomes first system to successfully complete complex multi-step cybersecurity infiltration test, advancing evaluation of AI security risks.

UK government's Mythos AI becomes first system to successfully complete complex multi-step cybersecurity infiltration test, advancing evaluation of AI security risks.

Mythos AI achieved a significant milestone by completing a difficult multistep infiltration challenge, marking the first time an AI system has passed this benchmark

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