
Anthropic's Claude watermarks broken within four hours of launch
Developer Guillaume Meyer's override went viral on GitHub with 20,000 X bookmarks and 100+ contributors, exposing the fragility of EU-mandated AI watermarking.
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Developer Guillaume Meyer's override went viral on GitHub with 20,000 X bookmarks and 100+ contributors, exposing the fragility of EU-mandated AI watermarking.

The EU AI Act forces disclosure by August 2, and Anthropic is going further than the law requires — marking edits, translations, and summaries too.

Watermarks apply at the model level, travel through copy-paste, and cover every Claude surface including Code and Cowork.

The document maps OpenAI's safety, security, and risk practices to emerging regulations in the EU and California.

Luccioni and Boris Gamazaychikov are betting enterprise buyers will pay for emissions transparency the big model labs won't provide.

Brussels pushes high-risk AI compliance deadlines from August 2026 to as late as August 2028, handing European AI firms a reprieve.
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