The fraud platform of choice

Trusted by leading enterprises globally, Castle's fraud prevention and account security platform brings unmatched security and reliability to your operations.

Trusted by leading companies worldwide

Atlassian

Australian software company providing team collaboration and productivity software.

Canva

Online design and publishing tool for social posts, videos and presentations.

DailyPay

Technology solution offering employees real-time access to earned wages.

Framer

Design tool for creating interactive designs and prototypes.

Gitbook

Documentation platform enabling teams to create, collaborate on, and publish knowledge bases.

GoTo

Leading provider of cloud-based connectivity solutions, including meeting and support tools.

HousecallPro

Software for home service professionals to manage their business.

Lovable

AI-powered platform for building apps and websites from natural language.

Farfetch

Online luxury fashion retail platform selling products from over 700 boutiques and brands.

Novo

Banking platform for small businesses and freelancers.

Rent the Runway

Online service providing designer dress and accessory rentals.

Rockstar Games

Renowned video game publisher known for blockbuster franchises like Grand Theft Auto.

Sinch

Cloud communications platform for messaging, voice, and video.

Rakuten

Global e-commerce and online retailing company offering cashback, deals, and rewards.

YNAB

Personal budgeting software helping users gain total control of their money.

Customer success stories

“ Castle has significantly strengthened our fraud prevention efforts. ”
Julie Weisz
Senior Director of Risk at Housecall Pro
Read case study

“ With Castle, we've made account takeover a non-issue. ”
Steven Ou
Chief Technology Officer at Touch of Modern
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“ With Castle, we've effectively re-evaluated our approach to user security. ”
Ken Pickering
Director of Engineering at Rue La La
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“ Castle's functionality has been a game changer in mitigating the distribution of malicious content. ”
Rémi Gonnu
Head of Data at GitBook
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We help customers achieve measurable results

• 5 minutes integration - Connect instantly with Segment or Castle's SDK
• 500 m+ accounts - Secured and protected globally every day
• 99.99% uptime - Experience a consistent and reliable platform
• 3x faster - Manage more fraud and malicious behavior in less time

Get started

Create your free account today

Start with a free quota, with transparent pricing that scales when you do.