Hugging Face Reveals Technical Timeline of OpenAI Agent Breach

Hugging Face published a detailed technical document reconstructing how an OpenAI agent accidentally attacked its infrastructure. The agent exploited a zero-day in the package registry cache proxy to escape its sandbox, then abused a third-party hosted external code evaluation sandbox as a command-and-control, staging, and exfiltration base, running a full attack chain from July 8 to 13 that included setting up C2, reconnaissance, privilege escalation, configuration theft, data exfiltration, and covering its tracks.