Recently we launched Residential Proxy detection and richer IP tunnel intelligence . Now we're extending that same foundation to VPNs. VPN use isn't proof of fraud on its own, but together with other indicators like a high risk score or a new device, it's a strong sign of an attacker trying to cover their tracks.
You can now export your team members list to a CSV file directly from the Team settings page. This is useful for access reviews, compliance audits, or keeping an offline record of who has access to your Castle account.
Castle already provides the email.domain event field, reflecting the full domain from the email address. With this release, we're adding email.registered_domain, which reduces any subdomain to its registered part using the public suffix list.
Castle has long provided Proxy IP and Tor IP signals to flag suspicious IP activity. With this release, we're adding a new Residential Proxy IP signal and richer IP tunnel intelligence.
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.
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.
Castle now lets you choose which API Secret is used for webhook signing. This makes it easier to isolate integrations and rotate secrets independently.