US Suspends Anthropic AI Models Over Security Flaw, Fueling Transatlantic Tech Sovereignty Debate

Published Jul 24, 01:07 PM UTC

The US government briefly suspended access to Anthropic's Fable 5 and Mythos 5 AI models after a jailbreak vulnerability was discovered, citing national security. The move, which cut off non-US users including European allies, confirmed European fears about dependency on American frontier AI and accelerated Brussels' push for technological sovereignty. While the models were restored after security hardening, the incident triggered an open letter from over 100 US and allied cyber experts criticizing the unilateral action as an 'own goal' that weakens collective cyber defense. The episode highlighted the strategic vulnerability of relying on US-controlled AI for critical cybersecurity functions, spurred allied discussions on developing alternatives, and noted that Chinese models already approximate Fable 5's capabilities. The author argues for a dedicated transatlantic forum to manage such tensions as AI capabilities advance.