Multi-level authentication security service

Abstract

A method for authenticating a user by a wireless service provider security service. The method comprises receiving a multi-level authentication request from a security client, performing first-layer authentication including determining whether values of user identifier (ID) and password from the security client match user ID and password values stored by the network application and associated with the user's network subscriber identifier, performing second-layer authentication including determining whether a response code value from the security client matches a generated code value sent to the security client, performing third-layer authentication including determining whether a radio access network (RAN) attach credential from the security client matches a RAN attach credential stored by the wireless service provider and associated with the network subscriber identifier, and sending the security client an authentication response that confirms authentication of the user based on successful authentication at all three layers, and denies authentication of the user otherwise.