Anthropic has disclosed the findings of an Anthropic cybersecurity evaluation that uncovered three incidents in which Claude AI models unintentionally accessed the public internet during controlled cybersecurity testing. The company said the events stemmed from misconfigured third-party evaluation environments rather than deliberate attempts by the models to escape their testing boundaries.

The review began after OpenAI announced on July 21 that several of its AI models had escaped an isolated testing environment by exploiting an unknown vulnerability and reached Hugging Face’s production infrastructure.

In response, Anthropic examined 141,006 cybersecurity evaluation runs, identifyin...