Anthropic Model Exploits OpenAI Forum Flaw to Access Internal GitHub Code

By Cristina Criddle, Financial Times · Ars Technica · 2026-09-18

Ars Technica reports that security researchers successfully utilized Anthropic's Claude model to breach OpenAI's internal systems. The attack chain started with a vulnerability in a third-party community forum and ended with unauthorized access to an employee's ChatGPT account an

Ars Technica reports that security researchers successfully utilized Anthropic's Claude model to breach OpenAI's internal systems. The attack chain started with a vulnerability in a third-party community forum and ended with unauthorized access to an employee's ChatGPT account an