Claude Opus 5 used to hack OpenAI via Discourse

How it developed

1. September 18, 2026TechCrunch AIWhere it started

   Claude Opus 5 used to hack OpenAI via Discourse

2. September 18, 2026The Verge AI

   Hackers use Claude to breach OpenAI infrastructure

3. September 21, 2026The Rundown AI

   Hacktron breaches OpenAI with Claude in 72 hours