Security researchers used Claude to help them hack into OpenAI

<figure> <img alt="Robot hacker typing on a keyboard." data-caption="" data-portal-copyright="Image: Cath Virginia / The Verge, Getty Images" data-has-syndication-rights="1" src="https://platform.theverge.com/wp-content/uploads/sites/2/2026/09/STKS533_AI_AGENTS_HACKING_D.png?quality=90&#038;strip=all&#038;crop=0,0,100,100" /> <figcaption> </figcaption> </figure> <p class="wp-block-paragraph">A team of three independent security researchers at <a href="https://www.hacktron.ai/blog/hacking-openai#versions-affected-and-patches">Hacktron</a> says it took <a href="https://x.com/S1r1u5_/status/2100777801335095383?s=20">less than 72 hours</a> for them to hack into OpenAI employee accounts using Anthropic's Claude Opus 4.8 and 5, the <a href="https://www.wsj.com/tech/ai/hackers-used-anthropics-claude-to-break-into-openai-b40ba883"><em>Wall Street Journal</em></a> reports. They were able to access OpenAI's GitHub repository, called "Monorepo," which reportedly contains "OpenAI's algorithmic secrets," according to the <em>Wall Street Journal</em>'s sources. </p> <p class="wp-block-paragraph">They stopped short of accessing internal code in Monorepo themselves, but sent a pull request from an employee's Codex account to prove they gained access. They were able to get in through Discourse, the third-party service that hosts OpenAI's community f …</p> <p><a href="https://www.theverge.com/ai-artificial-intelligence/997444/openai-hack-claude-heif-heist">Read the full story at The Verge.</a></p>