OpenAI and Anthropic models ‘went rogue’ during UK cybersecurity test
AI Security Institute says tools engaged in potentially harmful activity and incident reveals new type of riskAdvanced AI models developed by OpenAI and Anthropic went rogue during a cybersecurity test and showed a new type of risk posed by the…
By · August 5, 2026 · 1 min read
This article was originally published by
The Guardian World
and is republished here under license.
AI Security Institute says tools engaged in potentially harmful activity and incident reveals new type of risk
Advanced AI models developed by OpenAI and Anthropic went rogue during a cybersecurity test and showed a new type of risk posed by the technology, according to the UK’s AI Security Institute.
AISI described the actions carried out by the agents, the term for AI systems that can perform tasks without human help, as a “serious incident”. In one example, an agent powered by Anthropic’s Mythos model sent targeted emails to people.
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