AI models capable of launching major cyberattacks that could overwhelm the defenses of governments and businesses are months – not years – away, an international alliance of intelligence agencies warned in a joint statement.

The Five Eyes grouping, comprising the United States, United Kingdom, Canada, Australia and New Zealand, urged governments and corporate leaders to “act now” to improve their defenses against sophisticated cyber threats.

The rare call to action comes after the Trump administration ordered AI giant Anthropic to suspend use of its most advanced models by foreign nationals, and highlights the growing unease among western nations about the emerging capabilities of the technology.

“Frontier Al models are anticipated to exceed current industry expectations, fundamentally transforming both offensive and defensive cyber capabilities. The timeline is not years, it is months,” the group of spy agencies said in the statement on Monday.

“The evolving landscape of artificial intelligence (AI) is rapidly transforming cyber risk, and we must act swiftly to remain ahead.”