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White Hats Used Anthropic’s Claude to Break Into OpenAI in 72 Hours

Bitcoin.com News·September 18, 2026·1 min read
White Hats Used Anthropic’s Claude to Break Into OpenAI in 72 Hours

A small team of researchers used Anthropic's Claude Opus 5 to chain three bugs and break into OpenAI's private code repository in under 72 hours. OpenAI paid $6,500 for the white-hat hack, which exploited a vulnerable 'libheif' library inside Discourse forum software, enabling remote code execution.

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