SIZE XS SIZE SM SIZE MD SIZE LG

Castle

Castle prevents account takeover in web and mobile apps.

Blog Posts

Deep dive: how navigator.deviceMemory can be used for fingerprinting and bot detection

September 10, 2025

How we detected a CAPTCHA solver in the wild, and what it says about bot defenses

September 3, 2025

Why a classic CDP bot detection signal suddenly stopped working (and nobody noticed)

August 28, 2025

Fraudulent email domain tracker: August 2025

August 27, 2025
Show all Blog Posts (95 more)