Instead of asking users to solve complex puzzles or track their behavior, Private Captcha solves an invisible cryptographic task in the background. The system automatically adjusts the task difficulty, ensuring smooth access for real users while making it too costly for bots to attempt. Cryptographic task provides equal security regardless of bot's intelligence level, making it effective even as AI technology improves. Which is hard to say about image/sound recognition tasks of other captchas.
Anubis is a tool you operate. Private Captcha is a platform you rely on.
No tuning, no difficulty guessing. Our European platform shares what it learns about attackers across every site and sets the right challenge for each visitor.
Time for a refresh
Private Captcha is different?
If you've been looking at Anubis, you already know the idea: put a proof-of-work challenge in front of your site and make life harder for AI scrapers. It works, and plenty of people are happy with it. The difference is what happens the day after you install it. With Anubis, you're the one watching it, deciding how hard the challenge should be, and fiddling with it when scrapers get smarter. With Private Captcha, we do that part.
Then there’s the unglamorous part: someone has to still be around next year. Private Captcha is a profitable European company with an actual support inbox, built privacy-first from day one. Your security reviewer can approve it without a long email thread, and you can put it in a customer questionnaire without having to explain the logo.
Ready for a change?
Try it yourself.
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Trusted by European Agencies, Government Organizations, and Small to Mid-Sized Enterprises
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Question zone
Frequently Asked Questions
On scale, bots exhibit different usage patterns and fingerprints statistics than real users. Detection of those patterns is part of the Private Captcha solution as we process a lot of request data on behalf of our clients.
No. Scraping protection issues a signed cookie with validity period that you configure in the dashboard. During that period all requests do not incur additional API calls.
Private Captcha does not use any client-side tracking technologies like cookies and does not retain Personally Identifiable Information (PII) on its backend systems. As part of service operation, user data is anonymized and aggregated, making it impossible to track to any individual user.
Private Captcha is powered by exclusively European suppliers. If you want to ensure that no data is transferred to other countries due to geographic routing, you can also use our EU-only API endpoints.
The data we collect belongs to you. We do not collect PII and aggregated data we do collect is not shared with any third-parties. Outside of the hosting companies that own servers on which data is stored, no other vendor can access it.
Short answer is no. Our non-EU servers are API servers only without any data persistance (any data copies are temporary in memory only). Any servers that store (and/or replicate) data on disk, are within the EU only.
The Private Captcha widget offers better accessibility for website visitors, regardless of their cognitive abilities. Also, it is a more lightweight (17 vs 220 kB) solution that does not require cookie banners and therefore reduces friction of using the website.