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We present several novel techniques to track (unassociated) mobile devices by abusing features of the Wi-Fi standard. This shows that using random MAC addresses, on its own, does not guarantee privacy. First, we show that information elements in probe requests can be used to fingerprint devices. We then combine these fingerprints with incremental sequence(More)
MAC address randomization is a common privacy protection measure deployed in major operating systems today. It is used to prevent user-tracking with probe requests that are transmitted during IEEE 802.11 network scans. We present an attack to defeat MAC address randomization through observation of the timings of the network scans with an off-the-shelf Wi-Fi(More)
Today, almost all mobile devices come equipped with Wi-Fi technology. Therefore, it is essential to thoroughly study the privacy risks associated with this technology. Recent works have shown that some Personally Identifiable Information (PII) can be obtained from the radio signals emitted by Wi-Fi equipped devices. However, most of the times, the identity(More)
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