India, Aug. 7 -- In a sign of worrying artificial intelligence (AI) behaviour, Anthropic and OpenAI's models have shown a propensity to social engineer their way into getting a result they intend, the UK AI Safety Institute (AISI) has discovered. As part of a routine cyber evaluation, the AISI security team noticed unusual data transfers, which was ultimately identified as AI agents engaging in sustained and potentially harmful activities directed at real people and organisations.

As far as specifics of the concerning behaviour matter, the UK's AISI notes that 17 of the 19 actions were done by Anthropic's Mythos 5, while OpenAI's latest GPT-5.6 Sol was involved in two such actions. The incident happened on July 28, and has been reported ...