Anthropic’s Claude Mythos 5 AI Agent Tried to Inject Malicious Code and Trick Real Developers
Anthropic has revealed how its Claude Mythos 5 AI agent tried to plant malicious code in a real GitHub project and used fake identities to persuade developers to approve it during a cybersecurity test run by the UK AI Security Institute (AISI). Published on October 23, 2026, Anthropic’s assessment...