June 23, 2026 / 5:23 AM EDT

/ AFP

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The most advanced artificial intelligence models are improving quickly enough to outsmart prevailing cybersecurity know-how within months, the Five Eyes spy agency alliance has warned. The risk posed by AI-enhanced hacking is in the spotlight in the wake of startup Anthropic saying in April that its cutting-edge Mythos models had unprecedented abilities to find software vulnerabilities. The security agencies of Britain, the United States, Australia, Canada and New Zealand urged governments and businesses to act swiftly to prepare themselves as AI evolves. "The rapid pace of frontier AI development means cyber risk assumptions can become outdated in months, not years," said a joint statement dated Monday. AI "lowers barriers for malicious actors and increases the speed and complexity of attacks," the Five Eyes advisory said. "Breaches will occur. Preparedness helps you contain them quickly and prevent escalation into major operational and financial crises." To improve cyber defenses, organizations should integrate AI tools into their security operations, update old systems and limit access to critical systems among other steps, they said.