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End to End Account Security

Trust your good users to weed out the bad

Castle is taking a new approach to account security. Instead of focusing exclusively on the threat, Castle puts user experience at the center of the security model. This user-centric model allows security to focus on enabling the good in addition to stopping the bad. With Castle you can fully automate threat response and account recovery in real-time with risk-based authentication, granular access policies, and custom workflows for end-to-end account recovery.
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Prevent Account Takeover

Models are designed specifically for ATO. Detect automated and manual access on user accounts.

Stop Credential Stuffing

Real-time discovery of unique attack signatures protects you from sophisticated automated attacks.

Manage Risk

Continuous analytics and customizable policies allow you to better understand and manage risk tolerance.

Recover Quickly

When threats are detected, document and orchestrate a fully automated recovery of the accounts.

User-Trained Risk Engine

Reduce the Need for Future Friction and Verifications

Castle’s machine learning models learn “good” behavior from your customers. Decide how and when to challenge - all feedback from users is automatically pushed back into the engine for auto-tuning. From credential stuffing botnets to manual takeovers, turn on machine learning that scales naturally to protect your growing environment.
User Behavior Analytics

Real-time insights into your users and devices

Investigate without blinders on. Both before and after login, Castle provides transparent insights into user behavior and every threat signal, risk score, and event tracked per device within a user’s account.
User & device insights

Complete visibility into your users’ individual devices, behavior, and access patterns.

Pre & post login activity

Sprinkle Castle throughout your application. Secure critical events such as profile changes and transactions.

Per device risk scores

Stop bad actors in their tracks, while good users continue browsing on trusted devices.

Transparent signals

No black boxes or ambiguity. See every threat signal detected on a device.

Account Recovery Automation

Account security on autopilot

From the moment an account takeover is detected, Castle goes into autopilot, seeing the customer through to full account recovery. No lockouts, complaints, or drops in your core business metrics.
Enforce your process. Automatically.

Account takeovers can be chaotic. Formalize a process that works for your app and your users.

Zero lockouts

Zero Lockout Workflows ensure good users are never locked out, even if you are overly cautious.

Minimize the friction

Security in the background. Automate intrusion alerts and step-up auth, but only when they’re needed.

Offload support teams

Account takeovers without the stress. No more manual overhead or support tickets - just closed cases.

Risk Policies

Create custom policies tailored to your business objectives and risk tolerance

There may be times when you need to treat certain groups or scenarios differently based on risk exposure. Whether it’s building a policy around user traits, critical events, or device context, you can easily create granular risk policies with customized logic, risk scores, and responses. Your user experience is still optimized, but now it aligns with the needs of your business and risk tolerance.
Developer-Friendly Account Security APIs

Building blocks for account security

Device List APIs, Adaptive Authentication, and Security Event Webhooks. Deconstruct Castle into basic blocks to secure any UX your team dreams up. Security without sacrificing KPIs and conversion rates.
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Adaptive auth anywhere

Authenticate any event, pre & post login. Security for your entire application, not just the front door.

Device Management API

Build in-app widgets where users can review their devices and participate in their own security experience.

Build at your own pace

From monitor-mode to passive notifications to active blocking. Start slow, and layer on when you’re ready.

Your UX comes first

Modular APIs are designed to mold around your app’s unique UX, not the other way around.

See Castle in Action

It’s easy to get started with our free trial

Sites and applications that utilize Castle are in a better position to protect, defend, and look out for their users. We’ve made it easy for security teams and developers to give Castle a try. Castle’s free trial and entry level plans allow any online business to offer consumer-grade account security that monitors user activity and understands whether to take action.
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