Introducing Prelude Auth: What Authentication Is, and How We’re Rethinking It

Prelude Auth is presented as an authentication platform that combines identity verification, fraud detection, device and network signals, and session management into a single system, addressing what the company describes as common gaps between separate verification, fraud, and login vendors. The announcement distinguishes one-time verification at signup from ongoing authentication at logins and sensitive actions, arguing that carrying onboarding risk and device signals into later sessions can improve detection of fraud, account takeover, and automated activity. The product supports SMS and email OTPs, passwords, social login, SAML SSO, configurable step-up challenges, bot and agent detection, and session protections including DPoP and PKCE. Prelude says the service is built on its existing phone-verification infrastructure, offers REST APIs and mobile SDKs, supports migration of existing users without forced reauthentication, and is certified under SOC 2 Type II and ISO 27001. The company positions Auth as a consolidation option for teams seeking to replace separate verification, fraud, and identity tools, citing claimed cost savings and reduced integration complexity.

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