Changelog

Added

Phone call detection

Castle can now detect when a user is on a phone call during sensitive actions like login or transactions. This helps you catch social engineering attacks, where a scammer calls the victim and walks them through actions while simultaneously taking over their account.

Added

CSV export for Lists

Export the entries of any List to CSV. Click Export in the list toolbar and download your data.

Improved

IOS SDK 4.0.0 Release

Version 4.0.0 is a major update to the Castle iOS SDK. This release includes several improvements detailed below. Please review the breaking changes below before upgrading.

Added

Webhook API Key selection

Castle now lets you choose which API Secret is used for webhook signing. This makes it easier to isolate integrations and rotate secrets independently.

Added

Dark mode

Castle now supports dark mode.

Added

Multiple API keys

Create multiple Publishable API Keys and API Secrets. Rotate or revoke one key without breaking your other integrations.

Added

Fraudulent Email Domain signal

Castle now detects email domains that have been confirmed as actively used in fraud and abuse campaigns. Unlike disposable email services (Mailinator, TempMail), these are domains registered specifically for fraud that appear legitimate but exist solely for bot signups and fake accounts.

Improved

Brand new onboarding experience ✨

We’ve completely redesigned how you get started with Castle! Our new interactive 3-step guide makes onboarding simple and engaging:

Added

Additional object in the $challenge event payload

We’ve introduced a new challenge payload object for the $challenge events. It contains a trigger_event field, which describes the event that triggered the challenge (for example, a Login Attempted event).