Five Eyes Warn AI-Driven Cyber Threats Could Become Reality Within Months

Five Eyes intelligence alliance issues joint statement warning of a technology paradigm shift

"Cyber risk is a core business risk and a leadership responsibility"

Reuters says the warning signals rising concern among intelligence agencies over models from Anthropic, OpenAI and others

The Five Eyes intelligence alliance — comprising the US, UK, Canada, Australia and New Zealand — warned that cyber threats driven by artificial intelligence could become reality within months and called for immediate action.

In a joint statement issued on June 22, the alliance said cutting-edge frontier AI models will fundamentally reshape cyber capabilities in both attack and defense beyond current industry expectations. The group said the shift will happen in months, not years.

Five Eyes urged national leaders to act now. It called for assessments of AI-related risks, preparedness and accountability; prioritizing basic cybersecurity practices and control systems; giving cybersecurity leaders full authority and resources; and maintaining active engagement with evolving threat indicators and guidance.

The agencies said the response must extend across organizations and society as a whole. Cyber risk is no longer simply a technical issue but a core business risk and a leadership responsibility.

The statement did not provide specific examples or evidence of AI-based cyberattacks.

Markets view the warning as an extension of broad security concerns that have persisted since the so-called Mythos shock, which fueled fears that AI could fundamentally disrupt the existing security ecosystem.

Still, the statement carries added weight because intelligence agencies directly warned of AI-driven cybersecurity threats.

Reuters said the warning suggests concerns among global intelligence authorities over advanced AI models such as Anthropic's Mythos and OpenAI's GPT 5.5-Cyber have reached a critical level.

The statement did not name any specific model. Even so, it is seen as targeting Anthropic's Mythos, which has recently been hit by export-control measures.

On June 12, Anthropic said the US government issued export-control guidance that fully blocks foreign nationals from accessing Claude Mythos 5 and Claude Fable 5.

South Korea's government and some companies recently joined Project Glasswing, which provides access to Mythos. But the latest move by the US administration has put use of the model on hold.

Park Sang-kyung, Hankyung.com reporter, highseoul@hankyung.com