security

Which European companies use hCaptcha?

CipherCue tracks European organisations (EU27, EFTA, UK, Ukraine) observed running hCaptcha on their public infrastructure: detected through HTTP fingerprinting, response headers, and service banners. Sign up free, no credit card, to see the full list.

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Show me every European organisation using hCaptcha

Free, no credit card. Filter and view every European organisation observed running hCaptcha, alongside their full tech stack, hosting geography, and observed change history.

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How this is observed: CipherCue continuously probes the public-facing infrastructure of tracked organisations. hCaptcha is detected via HTTP response headers, HTML fingerprints, and TCP service banners. Each observation is timestamped and stored alongside its evidence. See the observation methodology for full detail.