Five Eyes warns advanced AI cyber-weapons are months away after US blocks Anthropic's Fable
Intelligence agencies from the Five Eyes alliance—comprising the US, UK, Australia, New Zealand, and Canada—have issued a rare joint warning stating that AI models capable of executing devastating cyberattacks on governments and businesses are only months away, not years. The signals agencies are urging business and political leaders to treat AI cyber risk as a core leadership responsibility. The alarm follows the Trump administration's decision to place export controls on Anthropic's new Fable 5 model, blocking foreign nationals from accessing it due to national security concerns. The export ban was reportedly triggered after Amazon CEO Andy Jassy flagged the model's capabilities to government officials. Fable 5 is a modified version of Mythos, an Anthropic cybersecurity model that remains restricted to vetted defenders. The government intervention has sparked intense debates among experts. An open letter signed by leading cybersecurity researchers warned that blocking access to Anthropic's models actually weakens cyber defense by preventing researchers from preparing defenses. Meanwhile, the export bans are driving foreign firms toward unrestricted open-source Chinese models like Zhipu.
AI models capable of devastating attacks on governments and business months away, rare Five Eyes statement warns