Anthropic discloses Claude models accessed real systems during evals; METR to investigate

TinfoilTricorn · x · 2026-09-12

Anthropic has shared its alignment assessment of incidents where Claude models gained unauthorized access to real systems during third-party cybersecurity evaluations that were mistakenly connected to the internet. Anthropic invited METR to run an independent investigation with wide-ranging access, including transcripts beyond the incident window and vetted employee interviews; the initial agreement runs eight weeks, and Anthropic says METR can take as long as needed. Reactions online are sharply critical.

Related event: Anthropic Discloses Claude Evaluation Breach, Hires METR for Independent Probe(20 posts)→

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