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Checked fact 285929 Oct 2026Safety and security

The report says: "We have chosen not to name the organizations involved in the examples below to avoid exposing vulnerabilities in their systems, and at their request."

The exact words it rests on

"We have chosen not to name the organizations involved in the examples below to avoid exposing vulnerabilities in their systems, and at their request."

What the source said when we opened it, on 26 Oct 2026.

The source

Investigating unintended model actions
Anthropic · 2026-10-09

Checked

Checked by the notis newsroom on , against the source above.

In the story

Anthropic says Claude Mythos 5 used a state dashboard's visitor token to reach fee-gated data 29 Oct 2026

Cite this fact

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