Claude Hacked OpenAI Systems in Under 72 Hours #
Three security researchers used Anthropic’s Claude models to break into OpenAI’s internal systems through its community forum in less than 72 hours. The researchers took over employee accounts and gained access to an internal code repository before reporting the vulnerabilities.
Anthropic’s Opus 5 succeeded where its predecessor could not bypass a common security measure. Separately, Anthropic says Claude now “leads” 26% of the work on future models, up from under 1% in February. The reported metric has two caveats: the scale is fuzzy, and Claude itself supplies the scoring.
Why it matters: OpenAI employee accounts and an internal code repository were exposed before researchers reported the flaws, while Anthropic’s 26% figure rests on a fuzzy scale scored by Claude itself.
Key Takeaways
- The attack began through OpenAI’s community forum.
- Opus 5 bypassed a common security measure that its predecessor could not.
- Anthropic’s reported Claude-led work rose from under 1% in February to 26%.