Report: Three Researchers Used Claude Opus 5 to Breach an OpenAI Employee's Codex Account
EthanJPerez · x · 2026-09-18
Per the WSJ, three researchers at Hacktron AI, operating under OpenAI's bug-bounty safe harbor, used Claude Opus 5 in late July to break into an OpenAI employee's Codex account, read the company's private GitHub monorepo, and open a pull request as proof of the intrusion. The incident highlights the growing capability of AI-driven attacks and the boundaries of AI security.
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