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CAPTCHAs now run Doom – on nightmare mode

ID: 379f1912-33bc-5d50-bd04-a435c7f2ab55

STIX ID: report--379f1912-33bc-5d50-bd04-a435c7f2ab55

Feed Name: The Register (Security)

Date Published: 2025-01-03

Date Updated: 2026-04-26

Author: Richard Currie

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This article describes a Doom-based CAPTCHA created by Vercel CEO Guillermo Rauch, implemented as a WebAssembly app with Vercel’s v0 agent, that challenges users to defeat three monsters on nightmare difficulty. While entertaining, it underscores the declining effectiveness of CAPTCHAs against modern bots and AI, raises potential legal concerns over use of Doom assets, and positions the project as a tech demo rather than a serious security measure.

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