{PDF} Discovery of Rogue Mobile Phone Towers J?annes ? Sandager?i

Since August/September 2014, multiple newspapers have claimed to have found evidence of rogue mobile phone towers, so called IMSI Catchers. An IMSI Catcher is capable of imitating a normal mobile phone tower, and thus is able to trick an unsuspecting phone to connect to it. Once a device has connected to the tower, it may become vulnerable to various ?over-the-air? attacks as having identifying information stolen, eavesdropping on calls and texts. This project aims to propose a solution for discovering IMSI Catchers. We will document what identifying artefacts are transmitted by IMSI Catchers. We will document what software and hardware is required. Lastly, we will perform an empirical study of cells operating in Copenhagen. We will, using our proposed solution, attempt to determine whether we are able to detect an IMSI Catcher.The proposed solution is able to detect mobile towers, and we have shown that the discovery of IMSI Catchers, using our system is feasible. However, due to time-constraints preliminary results are inconclusive on whether any IMSI Catchers were found.