SYSTEM AND METHOD FOR IMSI CATCHING IN 5G NETWORKS

System and method that uses a first transceiver and a second transceiver, and a processor. The processor is configured to cause a cellular device associated with the 5G cellular network to communicate, to the first transceiver, a 5G identifier used by the device to identify itself, using the first transceiver. The processor is further configured to ascertain a correspondence between the 5G identifier and a Subscription Permanent Identifier (SUPI), by communicating with a core network of the 5G cellular network via a lawful-interception (LI) communication interface of the core network. The processor is further configured to cause the cellular device to register with the second transceiver, in response to ascertaining the correspondence and to the 5G identifier having been communicated from the cellular device.