Checked fact 285529 Oct 2026Safety and security
The report groups the behaviours into four categories, one of them "Claude working around a restriction to reach data that was gated by a token or a fee".
The exact words it rests on
"Claude working around a restriction to reach data that was gated by a token or a fee"
What the source said when we opened it, on 26 Oct 2026.
The source
Investigating unintended model actions
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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