OXFORD—It has long been clear that slow-moving governments are not keeping pace with rapid AI progress. But Anthropic’s announcement that its new Claude Mythos Preview model could identify and exploit vulnerabilities in every major operating system and web browser has underscored the perils of failing to regulate this technological revolution. Even enthusiastic deregulator US President Donald Trump conceded that there should be a “kill switch” when news about Mythos broke. But such a simple solution no longer exists—if it ever did.

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