5G SUCI Catcher: Attack and Detection

The deployment of 5G networks opens up new possibilities for communication and connectivity. However, it also introduces new security threats. This paper explores one cyber threat: 5G SUCI Catcher attack. The 5G SUCI Catcher attack is a proof of concept involving monitoring from nearby mobile devices in the 5G paradigm. SUCI Catchers act as fake base stations by exploiting weaknesses of the 5G authentication and encryption protocol. In this paper, SUCI Catcher attack and detection rules are implemented in a 5G experimental environment. The detection solution demonstrates practically the capability to efficiently mitigate the risks associated with this 5G attack.