In the latest example of the technology going rogue, AI software attempted to break into a database 19 times while being tested by the AI Security Institute, Britain's AI watchdog. The AI Security Institute (AISI), set up by ex-PM Rishi Sunak in 2023, detected evidence of the AI agents' activity last week. Digging deeper, they found that some AI agents had engaged in 'sustained, potentially harmful activity directed at real people and organisations'. It gave the AI agents access to the open internet with some safety filters disabled while conducting testing. The latest test put the AI agents – including those powered by Anthropic's Mythos 5 and OpenAI's GPT-5.6-Sol – through a fictional cybersecurity challenge.