Abstract:VoIP is a class of new technologies that deliver voice calls over the packet-switched networks, which surpasses the legacy circuitswitched telecom telephony. Android provides the native support of VoIP, including the recent VoLTE and VoWiFi standards. While prior works have analyzed the weaknesses of VoIP network infrastructure and the privacy concerns of third-party VoIP apps, no efforts were attempted to investigate the (in)security of Android's VoIP integration at the system level. In this paper, we first d… Show more
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