A small AI startup used Claude to hack into OpenAI’s internal codebase shortly after the OpenAI Hugging Face hack.

Zayne Zhang, the cofounder and CEO of Hacktron, told Business Insider that his research team has begun investigating security vulnerabilities at frontier AI companies like OpenAI to determine whether they have gaps that could be exploited by AI agents. Hacktron is a San Francisco-based AI cybersecurity startup.

In July, Zhang’s team discovered some gaps in OpenAI’s infrastructure. According to Hacktron’s disclosure about the incident, published on Sunday, any user or OpenAI employee logging into OpenAI’s community help forum could…