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Castle

Castle prevents account takeover in web and mobile apps.

Blog Posts

How to detect disposable email domains without relying on 3rd party APIs and lists

October 22, 2025

Roll your own bot detection: server-side detection (part 2)

October 15, 2025

Roll your own bot detection: fingerprinting/JavaScript (part 1)

October 8, 2025

Fraudulent email domain tracker: September 2025

September 30, 2025
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