1. A behavioral biometric-based user verification system for use with a mouse input device, said system comprising: a data interception unit configured to intercept inputs from a user that are directed to an in-focus application other than a user authentication application not in focus, wherein the data interception unit is configured to passively collect at least one of mouse movement data, mouse point and click data, and mouse drag and drop data generated in response to usage of the mouse in providing input to the in-focus application other than the user authentication application; a behavior analysis unit operatively coupled to said data interception unit to receive the passively collected mouse data, and a behavior comparison unit operatively coupled to said behavior analysis unit, wherein said system dynamically monitors and passively collects behavioral biometric information, and translates said behavioral biometric information into representative data, stores and compares different results, and outputs a user identity result associated with authorization of the user.