Abstract: Systems and methods are described for providing multi-level security for a software application. In one system, an application programming interface provides access to secured software applications. A database stores authorizations granting each user access to selected applications, selected application screens, and selected fields within application screens. The application programming interface is configured such that a security software application prevents a user from gaining access to an application, screen, or field unless authorization has previously been given. A further system provides for the assignment of privileges to users of the application. These privileges define the specific functions that a user is allowed to perform with respect to an authorized application, screen, or field.