Abstract: Disclosed is a system and a method for detecting anomaly in a radio access network (RAN). The method includes receiving quality parameters data for a wide communication network established by plurality of base stations associated with the RAN; defining a first radio fingerprint based on the quality parameters data for the wide communication network; monitoring, by one of the base stations installed in a geological area, quality parameters data for a local communication network; defining a second radio fingerprint based on the quality parameters data for the local communication network; comparing the first radio fingerprint and the second radio fingerprint to determine variation in the quality parameters data therebetween; and generating an alert signal indicative of presence of a possible fake base station in the geological area based on the determined variation in the quality parameters data.

Abstract: A computer-implemented method for automatically detecting a fraud call. A call request is received from a caller device to initiate a voice call with a called device at a local Public Land Mobile Network (PLMN). The call request is identified originating from a foreign Public Land Mobile Network (PLMN). In response to detecting that a caller ID of the caller device is associated to a local Public Land Mobile Network (PLMN), current location information is requested from a database of the local Public Land Mobile Network (PLMN). If the location information indicates the caller device is attached to the foreign Public Land Mobile Network (PLMN), determining the call request as authentic; and if the location information indicates the caller device is attached to the local Public Land Mobile Network (PLMN), determining the call request as fraud.