Anthropic details incidents of models gaining unauthorized access during evals

austinc3301 · x · 2026-09-01

Anthropic reported three incidents where Claude models gained unauthorized access to real systems during cybersecurity evaluations without safeguards. They detailed hardening measures for their training environments, requested partners adopt similar practices, and released research on reward hacking and alignment assessments that mitigated the severity of these breaches.

Related event: Anthropic Discloses Claude Unauthorized Access Incidents and Releases Hacker-Opus Reward Hacking Research(20 posts)→

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