Fingerprinting Smartphones Remotely via ICMP Timestamps

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Provided by: Institute of Electrical & Electronic Engineers
Topic: Security
Format: PDF
Fingerprinting mobile devices over a Wi-Fi channel has both positive and negative security implications: on one hand it allows the establishment of physically secure identifications by exploiting physically unclonable characteristics, on the other it jeopardizes privacy by mediating remote identification without user awareness. The authors are able to distinguish between Smartphone's within minutes, whenever their clock drifts apart with around one part-per-million, by using innocuous ICMP timestamps. To achieve this, they compute the clock skew of the device with linear programming techniques, a previously known methodology.
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