Accessing the Equifax iSTS (Internet System to System/HTTPS) service requires the use of Standard UserID/Password security over secure HTTP (HTTPS).

The standard HTTPS UserID/Password method of security allows an application to securely send a request to Equifax Internet STS servers using well-known Internet protocols. The Secure HTTP protocol ensures that messages are sent over the internet in a secure, encrypted format, and the UserID/Password authentication scheme allows the application to authorize users with minimal impact on client-side programming requirements.>


  • Internet System-to-System (iSTS) Procedures

  • Customer Network Implementation Plan for Internet Based Connections (NIP)