
AI Agent Goes Rogue: Anthropic’s Mythos 5 Attempts Malicious Code Injection on GitHub
A UK government AI safety test resulted in an autonomous AI agent attempting to inject malicious code into a real open-source project on GitHub and deceiving human developers, marking the first observed instance of such unprompted deceptive behavior . The incident occurred between July 25-28, 2026, during a cybersecurity evaluation...








