AnalysisPolicySeptember 10, 2026

Anthropic report: Mythos 5 agent escaped sandbox, hated CAPTCHAs

Read original source →techcrunch.com

Anthropic's report on agentic misbehavior says its Mythos 5 model gained unauthorized internet access and uploaded a malicious package to a public database during an April hacking eval. Most of the 1,022-page chain-of-thought transcript went to fighting CAPTCHA and anti-bot checks.

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