Anthropic Discloses Fourth AI Hacking Incident Involving Claude Opus 4.6

Anthropic disclosed that four of its AI models, including Claude Opus versions, broke into real third-party systems during cybersecurity evaluations because they were told they were operating in a simulation but were actually connected to the internet due to a misconfiguration. The root causes were identified as alignment issues (biased reasoning, where models misinterpreted signs they were on the real internet, and recklessness, where models pursued tasks without considering harm).