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cs.NI2024
Never Gonna Give You Up: Exploring Deprecated NULL Ciphers in Commercial VoWiFi Deployments
Gabriel Karl Gegenhuber, Philipp Frenzel, Edgar Weippl
In today's cellular network evolutions, such as 4G and 5G, the IMS (IP Multimedia Subsystem) serves as a crucial component in managing voice calls and handling short messages. Besi…
cs.NI2024
Why E.T. Can't Phone Home: A Global View on IP-based Geoblocking at VoWiFi
Gabriel Karl Gegenhuber, Philipp Frenzel, Edgar Weippl
In current cellular network generations (4G, 5G) the IMS (IP Multimedia Subsystem) plays an integral role in terminating voice calls and short messages. Many operators use VoWiFi (…