Abstract: A method for monitoring network authentication performance in wireless communication systems is disclosed, whereby a standardized message will be used to enable external reporting of a selection of (or all) successful Global Challenges. A network operator can select which Global Challenge results are to be reported, based on one or more factors such as, for example: subscriber number series (i.e., if a subscriber's number is within a predetermined range, then a successful Global Challenge can be reported); predetermined periodicity (i.e., the nth successful Global Challenge for a subscriber or MSC/VLR can be reported); access type (i.e., a successful Global Challenge for a Registration request, Originating Calls, Terminating Calls, and/or Originating Short Messages can be reported), etc.