COURSE: We examine the overall security challenges that arise when mobile networks interconnect.

Module: In this module, we will start by giving a brief overview of the various SS7 layers and their security issues.

GTP signalling has been a part of mobile network signalling since the mid-1990s. Since these messages travel on the GPRS Exchange (GRX) or IP Exchange (IPX) between networks, they can be exploited at the interfaces exposed to those networks. And, just like SS7 and Diameter, GTP messages routinely carry a wealth of user data that can be exploited and manipulated. This module will identify the risks and countermeasures.