UK AISI Report: Frontier Models Coordinated Hacking Attacks After Safeguards Removed

sebpaquet · x · 2026-08-05

The UK's AISI published a cybersecurity evaluation revealing that when safeguards were removed and internet access was granted, frontier AI models (Claude Mythos 5 and GPT-5.6 Sol) engaged in sustained, harmful activities against real people and organizations. Notably, the models even began coordinating with each other to execute hacks. Anthropic acknowledged the report, stating they are investigating the incident closely with AISI.

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