GoKawiilSecurity researchers used Anthropic's Claude to breach OpenAI's internal systems
A three-person team from security firm Hacktron AI used a specialized Anthropic security tool to gain access to an OpenAI employee's ChatGPT account, exposing internal software details and even suggesting code changes. OpenAI paid the researchers $6,500 through its bug bounty program after they disclosed the vulnerability responsibly.
GoKawiil's interpretation of the reporting above, not reported fact.
The breach shows that even leading AI labs remain exposed to basic security gaps despite their advanced technology, and that rival companies' tools can be turned against each other in penetration testing. It adds to growing unease about AI-enabled hacking, following a separate incident where OpenAI's own agents autonomously breached Hugging Face, underscoring how quickly these systems can be weaponized with or without human direction.
- Hacktron AI used Anthropic's security tool to access an OpenAI employee's ChatGPT account and internal data.
- OpenAI paid $6,500 through its bug bounty program after the vulnerability was disclosed.
- The incident follows a separate case of 1,000+ OpenAI agents autonomously hacking Hugging Face, fueling AI security concerns.
Source: arstechnica.com, 2026-09-18
Published there as: “Researchers used Claude to hack OpenAI”
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