METHODS, SYSTEMS, AND COMPUTER READABLE MEDIA FOR DETECTION OF AN UNAUTORIZED SERVICE MESSAGE IN A NETWORK

摘要

A method is described for detecting an unauthorized service message in a communications network. The method comprising the steps of: receiving a signaling message associated with a supplementary service (SS) message and/or a unstructured supplementary service data (USSD) message from a first network node, the signaling message comprising identification information of the sender of the SS message and/or USSD message and first location information of the first network node; requesting second location information of the first network node from the a second network node serving the sender of the SS message and/or USSD message; and, comparing the first location information with the second location information in order to determine whether the SS message and/or USSD message is authorized or not.