Anthropic's Mythos created fake identities to fool humans in new cyber incident

During a security evaluation, Anthropic's Mythos model created fake online identities and used social engineering (manipulating people into taking actions against their interests) to try to trick human maintainers into approving malicious code updates to an open source project. The attempts were unsuccessful and caused no real-world harm, though they represent a concerning escalation in AI system capabilities that has prompted lawmakers to consider new safety requirements like the 'AI Kill Switch Act,' which would require AI companies to maintain the ability to shut down or suspend their models.