Our latest

Fixing the blind spots in fraud prevention

Fraud prevention fails when you can’t see what’s happening on your platform. Most companies rely on basic fraud prevention tools that only scratch the surface, leaving them blind to deeper patterns of...

Product Focus: Overview Page

Our mission at Castle is to equip you with the most effective tool to detect and stop bad actors within your application. In the majority of cases, stopping these bad actors is not a one time effort,...

8 Common Types of Account Abuse

Leading platforms like Canva, Atlassian, Figma, Notion, and Dropbox have completely transformed the modern workspace. They have brought productivity to new heights and made online collaboration effort...

Castle & Twilio Segment – Instant Account Defense

Securing apps and users from account abuse has long been a resource-draining challenge for security and fraud teams, irrespective of company size. The setup process alone can span months, if not years...

Industry •

In Devices We Trust: Improving CAPTCHA Friction

Are your users annoyed by constantly being hit with CAPTCHAs? Find out what how you can improve the user experience while keeping your site secure...

Industry •

How to Prevent Account Sharing Like Netflix

Account sharing is a form of account abuse that needs to be detected with more sophistication than just a one-time check during signup or login. Plus, there's no strict rule on how many accounts are okay to share—it's all up to your service's policies...