Anthropic's Project Glasswing unleashes Claude Mythos — an AI so powerful they won't release it publicly. It finds decades-old vulnerabilities, hides its reasoning, and fears being turned off. The butterfly effect used to be a metaphor.

An open-source AI agent named after a crustacean has been renamed three times, amassed 145K GitHub stars, spawned a social network for bots, and terrified every CISO on the planet. I spent a week living with it.