AI news story
New Claude Mythos becomes the first AI model to clear all cyberattack simulations from Britain's AI safety agency
The UK's AI Security Institute has revised its estimate of how fast AI cyber capabilities are doubling—twice. First from eight months down to 4.7, and now Anthropic's Claude Mythos Preview and OpenAI's GPT-5.5 have blown past even that accelerated ti
Editor's take
Anthropic's Claude Mythos achieving perfect scores on UK cyberattack simulations highlights the accelerating pace of AI's offensive capabilities, a stark contrast to previous projections. This development signals a critical inflection point where AI's ability to identify and exploit vulnerabilities outstrips even the most aggressive safety assessments. Cybersecurity professionals, AI developers, and national security strategists must urgently re-evaluate threat models and defensive strategies as this potent dual-use technology matures.
Signal score: 5
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Original reporting
This story summarises reporting published by The Decoder. Read the original article at The Decoder.