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Anthropic's own programme: a test

It was a test under Anthropic's own programme for outside researchers, through third-party sales and admin software.

“An AI startup hacked Anthropic in 12 hours and gained access to employee details and internal messages.”

India Today headline (26 October 2026), on a Washington Post report of Cathedral's draft findings

Recorded 1 November 2026. Our ruling means: literally true, materially misleading.

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Receipts pack

The evidence file for this verdict

11 receipts: 4 support the claim, 3 contradict it, 4 add context. 2 figures on the record, 2 traced to a quoted receipt.

The receipts

Each source, the line we quote from it, its date and which way it cuts. Free to read and to cite.

  1. 1Supports the claimindiatoday.in ↗

    A cybersecurity startup called Cathedral gained access to sensitive internal systems at Anthropic in less than 12 hours

    Look up an archived copy ↗

  2. 2Contextindiatoday.in ↗

    The incident was discovered during a security test conducted under Anthropic's programme for outside researchers to identify vulnerabilities.

    Look up an archived copy ↗

  3. 3Contradicts the claimindiatoday.in ↗

    Anthropic confirmed that the researchers accessed a limited set of its sales, human resources and IT systems.

    Look up an archived copy ↗

  4. 4Supports the claimindiatoday.in ↗

    “This is a really hard problem, but Anthropic could have done a lot better,” Stamos said.

    Look up an archived copy ↗

  5. 5Contradicts the claimdecrypt.co ↗

    The way in was not Claude, Anthropic's AI assistant, but third-party administrative and sales software

    Look up an archived copy ↗

  6. 6Contradicts the claimdecrypt.co ↗

    Customer conversations with Claude, source code and model weights, the billions of numbers that make up the trained AI, were not accessed, Anthropic said.

    Look up an archived copy ↗

  7. 7Contextdecrypt.co ↗

    The startup raised $160 million at a $1.4 billion valuation in July.

    Look up an archived copy ↗

  8. 8Contextcellcog.ai ↗

    They disagree on how far it went, what it means, and whether Cathedral kept to the rules of the bug bounty program it tested under.

    Look up an archived copy ↗

  9. 9Supports the claimindiatoday.in ↗

    AI startup hacks Anthropic in 12 hours, gains access to employee details and internal messages

    Look up an archived copy ↗

  10. 10Supports the claimindiatoday.in ↗

    exposing employee information, salary details, job offers and internal messages

    Look up an archived copy ↗

  11. 11Contextindiatoday.in ↗

    develops AI-powered cybersecurity tools for government agencies and corporate clients

    Look up an archived copy ↗

Members' extras

What each receipt proves, and what would change our mind.

  • What each receipt above proves, in our words
  • The figures table, each number traced to the receipt that states it
  • The trick behind the claim, explained, with the guide to spotting it
  • What would change our verdict
  • Our call on the record, with its due date

The verdict, the opening and every receipt above stay free. Membership adds our analysis to the evidence file for every checked story.

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