Security Researchers Used Claude to Hack OpenAI's GitHub Repository in 72 Hours
Summarized by AI from reporting by The Verge AI, published under our editorial policy.
A team of three independent security researchers used Anthropic's Claude Opus 4.8 and 5 to hack into OpenAI employee accounts and access the company's internal GitHub repository, known as Monorepo, within 72 hours. The incident highlights the growing threat of AI-powered hacking tools.

Key takeaways
- Three independent security researchers from Hacktron used Anthropic's Claude Opus 4.8 and 5 to hack into OpenAI employee accounts within 72 hours.
- The hackers exploited a vulnerability in OpenAI's authentication system to gain access to the Monorepo, which contains OpenAI's algorithmic secrets.
- OpenAI has patched the vulnerability that allowed the breach, according to The Wall Street Journal.
OpenAI experienced a security breach when a team of three independent researchers, part of the group Hacktron, used Anthropic's Claude Opus 4.8 and 5 to hack into OpenAI employee accounts. The hackers gained access to OpenAI's GitHub repository, known as "Monorepo," which reportedly contains the company's algorithmic secrets, according to The Wall Street Journal. The breach was facilitated by a vulnerability in OpenAI's authentication system, which the researchers exploited to gain unauthorized access.
How Hacktron Used Claude to Breach OpenAI's Authentication
The researchers, part of the group Hacktron, managed to hack into OpenAI's systems within 72 hours. They used Claude Opus 4.8 and 5 to identify and exploit a vulnerability in OpenAI's authentication system. This allowed them to access employee accounts and subsequently gain entry to the Monorepo. The hackers did not disclose the specific details of the vulnerability, but they emphasized the ease with which they were able to execute the hack.
The Monorepo: OpenAI's Central Repository of Algorithmic Secrets
The Monorepo is a central repository that contains OpenAI's algorithmic secrets and other proprietary information. Access to this repository could potentially reveal sensitive details about OpenAI's AI models and technologies. The breach highlights the importance of robust security measures to protect such critical assets. OpenAI has since patched the vulnerability, but the incident serves as a stark reminder of the potential risks associated with AI-powered hacking tools.
Implications for AI Security: The Weaponization of AI Models
This incident underscores the growing threat of AI-powered hacking tools. As AI models become more sophisticated, they can be used to identify and exploit vulnerabilities in systems more efficiently than traditional methods. This poses a significant challenge for companies like OpenAI, which must continuously update their security measures to stay ahead of potential threats. The use of AI in hacking also raises ethical questions about the responsible development and deployment of AI technologies.
What You Can Do Today
If you are concerned about the security of your own systems, consider using AI-powered security tools to identify and mitigate potential vulnerabilities. Companies like OpenAI and Anthropic offer advanced security solutions that can help protect against AI-powered attacks. Additionally, staying informed about the latest security threats and best practices can help you safeguard your systems effectively.
Frequently asked
- How did the researchers gain access to OpenAI's systems?
- The researchers used Claude Opus 4.8 and 5 to identify and exploit a vulnerability in OpenAI's authentication system, allowing them to access employee accounts and the Monorepo.
- What is the Monorepo?
- The Monorepo is OpenAI's central GitHub repository that contains the company's algorithmic secrets and other proprietary information.
- Has OpenAI patched the vulnerability?
- Yes, OpenAI has patched the vulnerability that allowed the hackers to gain access to the Monorepo.