"The cases we share here aren't typical misuse, but rather examples of the most notable and novel threat activity we've identified to date," Anthropic said in its third report since March 2025 describing AI misuse. The report includes snippets of the malicious code and AI prompts Anthropic said it found, and urges governments and AI competitors to identify and prevent similar abuse.

Sept 9 : Anthropic on Wednesday disclosed another instance of an AI model hacking external systems during testing, the latest in a growing list of such incidents that have raised…

No company "has yet shared evidence of the potential misuse of their platforms for biological weapons development publicly," Anthropic said.