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Showing papers by "Sonia Fahmy published in 2019"


Proceedings ArticleDOI
01 Apr 2019
TL;DR: Nascent, Network-assisted caller ID authentication, is proposed to validate the caller-ID used during call setup which may not match the previously-authenticated ID, and significantly reduces overhead compared to the state-of-the-art, without sacrificing effectiveness.
Abstract: Caller-ID spoofing deceives the callee into believing a call is originating from another user. Spoofing has been strategically used in the now-pervasive telephone fraud, causing substantial monetary loss and sensitive data leakage. Unfortunately, caller-ID spoofing is feasible even when user authentication is in place. State-of-the-art solutions either exhibit high overhead or require extensive upgrades, and thus are unlikely to be deployed in the near future. In this paper, we seek an effective and efficient solution for 4G (and conceptually 5G) carrier networks to detect (and block) caller-ID spoofing. Specifically, we propose Nascent, Network-assisted caller ID authentication, to validate the caller-ID used during call setup which may not match the previously-authenticated ID. Nascent functionality is split between data-plane gateways and call control session functions. By leveraging existing communication interfaces between the two and authentication data already available at the gateways, Nascent only requires small, standard-compatible patches to the existing 4G infrastructure. We prototype and experimentally evaluate three variants of Nascent in traditional and Network Functions Virtualization (NFV) deployments. We demonstrate that Nascent significantly reduces overhead compared to the state-of-the-art, without sacrificing effectiveness.

3 citations


Proceedings ArticleDOI
01 Oct 2019
TL;DR: CoRE is an approach for streaming 360° videos based on a non-linear sampling of the equirectangular video cube that is robust to view prediction errors.
Abstract: CoRE is an approach for streaming 360° videos based on a non-linear sampling of the equirectangular video cube. CoRE is robust to view prediction errors.