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Claude's new Scarlet Letter watermark is invisible — for now - Ars Technica

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Published by Ars Technica By Ashley Belanger · 13 August 2026 at 14:10

Claude's new Scarlet Letter watermark is invisible — for now - Ars Technica — Image · Ars Technica

What the report says

The mark flags anything Claude processed, even human writing it only edited.

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