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Castle

Castle prevents account takeover in web and mobile apps.

Blog Posts

Detecting Gmail-based fake accounts: what Emailnator teaches us

July 9, 2025

How to detect Brave browser using HTTP headers and JavaScript

July 8, 2025

How to detect browser time zone using JavaScript

July 8, 2025

Bought sneaker proxies by mistake, did science with them anyway

July 2, 2025
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