What happened in this Tech story?

Independent security researchers participating in OpenAI's bug bounty program hacked the company, gaining access to its internal "monorepo" code repository on GitHub using cybersecurity-tuned versions of Opus 4.8 and Opus 5.

What is a key fact in this story? (1)

**Security researchers** in OpenAI's bug bounty program hacked OpenAI, accessing its internal "monorepo" code system on GitHub, per a Wall Street Journal report.

What is a key fact in this story? (2)

The team used a **cybersecurity-tuned version of Opus 4.8 and Opus 5** to carry out the breach, exploiting access granted through the bug bounty channel.

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Bug Bounty Hackers Breach OpenAI's GitHub Monorepo — SkimNews

By TechMeme · Summarized & edited by Kapil Samant · 2026-09-18

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Security researchers in OpenAI's bug bounty program hacked OpenAI, accessing its internal "monorepo" code system on GitHub, per a Wall Street Journal report.
The team used a cybersecurity-tuned version of Opus 4.8 and Opus 5 to carry out the breach, exploiting access granted through the bug bounty channel.

Why it matters: Security researchers exploited OpenAI's own bug bounty program to access the company's internal monorepo on GitHub, using cybersecurity-tuned versions of Opus 4.8 and Opus 5. The breach demonstrates that frontier AI models can themselves serve as offensive tools, even within channels designed for defensive security research.