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Security researchers used Claude to help them hack into OpenAI

Three Indian-origin researchers from Hacktron AI used the Claude Opus 5 model to breach OpenAI. The team exploited chained security flaws to gain access to internal code and employee accounts in less than 72 hours. This event highlights a growing trend of AI-driven cybersecurity attacks, where large language models assist in identifying and exploiting vulnerabilities. While some sources describe the event as an ethical hack, the breach has intensified concerns regarding the security and safety of AI organizations.

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  • ✓ Security researchers used Anthropic's Claude to breach OpenAI.
  • ✓ The breach involved the use of Claude Opus 5 to take over OpenAI staff accounts via chained flaws.
🛡️ Source Corroboration: 9 independent reporting domains (90% confidence) ⏱ Read time: ~2 min

What changed

Hacktron AI researchers successfully used Claude Opus 5 to seize OpenAI staff accounts.

Live updates

  1. Researchers use Anthropic Claude to breach OpenAI

    Three Indian-origin researchers from Hacktron AI used the Claude Opus 5 model to breach OpenAI. The team exploited chained security flaws to gain access to internal code and employee accounts in less than 72 hours. This event highlights a growing trend of AI-driven cybersecurity attacks, where large language models assist in identifying and exploiting vulnerabilities. While some sources describe the event as an ethical hack, the breach has intensified concerns regarding the security and safety of AI organizations.

    Why it matters

    OpenAI and Anthropic are primary competitors in the generative AI market. This incident demonstrates how an AI model from one company can be used to compromise the infrastructure of another. It occurs as security teams face a surge in automated vulnerability reports.

    What is confirmed

    • Security researchers used Anthropic's Claude to breach OpenAI.
    • The breach involved the use of Claude Opus 5 to take over OpenAI staff accounts via chained flaws.

    Still unconfirmed

    • Three Indian-origin researchers at Hacktron AI completed the exploit in under 72 hours to access internal code and employee accounts.
    • The breach was conducted as an ethical hack.

    What to watch next

    • Official response or confirmation from OpenAI regarding the extent of the data breach
    • Statements from Anthropic regarding the use of Claude Opus 5 for offensive security operations
    Sources used for this update (9)
    1. WSJ — Exclusive | Hackers Used Anthropic’s Claude to Break Into OpenAI
    2. Financial Times — OpenAI breached by researchers using Anthropic models
    3. Ars Technica — Researchers used Claude to hack OpenAI
    4. The Guardian — OpenAI ‘ethically hacked’ with help of Anthropic’s Claude chatbot
    5. NBC News — Hackers breached OpenAI, adding to fever pitch of security and safety concerns
    6. The Verge — Security researchers used Claude to help them hack into OpenAI
    7. The Hacker News — Claude Opus 5 Helped Researchers Take Over OpenAI Staff Accounts via Chained Flaws
    8. www.fortuneindia.com — How 3 Indian researchers used Claude to hack OpenAI
    9. www.tweaktown.com — Intel kills its bug bounty program that paid up to $100,000 for flagging security vulnerabilities
    confidence 90%
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