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Freaky Leaky SMS: Extracting User Locations by Analyzing SMS Timings. (arXiv:2306.07695v1 [cs.CR])
cs.CR updates on arXiv.org arxiv.org
Short Message Service (SMS) remains one of the most popular communication
channels since its introduction in 2G cellular networks. In this paper, we
demonstrate that merely receiving silent SMS messages regularly opens a
stealthy side-channel that allows other regular network users to infer the
whereabouts of the SMS recipient. The core idea is that receiving an SMS
inevitably generates Delivery Reports whose reception bestows a timing attack
vector at the sender. We conducted experiments across various countries,
operators, and devices …
cellular channel communication introduction message messages network networks popular service side-channel silent sms sms messages