1. The profile that includes the service profile and contains all the data associated with the user, e.g., incoming call handling information, selection of service provider/service area coverage, service subscriptions, service parameters, etc. 2. A description of a user, typically used for access control. Note: A user profile may include data such as user ID, user name, password, access rights, and other attributes. 3. A pattern of a user's activity that can be used to detect changes in the activity. 4. Patterns of a user's activity that can show changes from normal behavior.