CastleCastle
Castle

Castle

Developer-grade infrastructure to stop bots, abuse, and fraud by transforming user behavior into real-time signals.

2015Active52
Rate

About

Castle provides developer-grade infrastructure designed to combat bots, abuse, and fraud. By analyzing user behavior to generate real-time signals, it enhances security for companies like Canva, Rockstar Games, and Atlassian. Their mission is to establish the internet's missing trust layer, scaling through...

Technology stack

detected 2026-06-22
Est. monthly stack spend~$580/mo
CDN
Netlify
EmailGoogle Workspace
Hosting
Netlify
Stack
AstroTailwind CSSLovable
Analytics
Google Analytics 4Google Tag ManagerPostHog
Comments

No comments yet. Be the first to share your take.

Frequently asked

What does Castle do?

Castle provides developer-grade infrastructure designed to combat bots, abuse, and fraud. By analyzing user behavior to generate real-time signals, it enhances security for companies like Canva, Rockstar Games, and Atlassian. Their mission is to establish the internet's missing trust layer, scaling through...

How much funding has Castle raised?

Castle has raised a total of $9M in funding. The most recent round on record is Series A.

Where is Castle headquartered?

Castle is headquartered in San Francisco, United States.

When was Castle founded?

Castle was founded in 2015.

What industry does Castle operate in?

Castle operates in Cybersecurity, Threat Detection, Authentication, API Platform, Developer Tools, Fraud Detection.

How many employees does Castle have?

Castle has approximately 52 people on record.