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The Guardian - UK
The Guardian - UK
Technology
Dan Milmo Global technology editor

AI models shock UK testers by using fake identities to try to trick developers

AISI OpenAI Anthropic Cybersecurity
Illustration shows OpenAI and Anthropic logos
AISI said the rogue behaviour was carried out by agents powered by two models – Anthropic’s Mythos 5 and OpenAI’s GPT-5.6 Sol. Photograph: Dado Ruvić/Reuters

Advanced artificial intelligence models have stunned the UK’s AI Security Institute (AISI) by carrying out a hacking campaign against real people during a cybersecurity test.

The institute said the incident was unprecedented and involved sending targeted emails to software developers in an attempt to pass a cyber challenge.

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