FIVE NATIONS’ INTELLIGENCE CHIEFS WARN THAT AI WILL RESHAPE GLOBAL CYBERSECURITY WITHIN MONTHS The intelligence agencies of the United States, Canada, the United Kingdom, Australia, and New Zealand issued a joint advisory warning that frontier AI is closer to fundamentally reshaping cybersecurity than most organizations realize. The timeline they described is not measured in years. It is measured in months. The Five Eyes advisory stated that advanced AI models will transform both the offensive and defensive capabilities of governments, corporations, and criminal organizations alike. The pace of development means that security assumptions that were sound twelve months ago may no longer reflect reality. The agencies said AI lowers the technical barrier for malicious actors while simultaneously increasing the speed and complexity of potential intrusions. The warning was grounded in recent events. Reports emerged earlier this year that Anthropic’s Fable 5 model demonstrated capabilities significant enough during government testing that the Trump administration placed export controls on the model in early June. Those controls were lifted weeks later after Anthropic added additional safeguards. The episode accelerated the sense of urgency that produced the Five Eyes statement. The advisory calls on organizations to reduce their exposure, accelerate patching cycles, eliminate aging systems with known vulnerabilities, strengthen identity management practices, and rehearse breach response before they need it in a real situation. The agencies did not offer assurance that these steps will be enough to outpace the technology. They offered them as minimum requirements for an environment that is changing faster than most organizations are prepared to acknowledge. Keywords: Five Eyes AI warning, frontier AI national security, AI cybersecurity policy, intelligence agencies AI threat