![]() V) Participant E made a lengthy phone call to her sister early one morning. Iv) Participant D placed calls to a hardware outlet, locksmiths, a hydroponics store, and a head shop in under 3 weeks. He also placed lengthy calls to the customer support hotline for a major firearm manufacturer the manufacturer produces a popular AR line of rifles. Iii) Participant C placed frequent calls to a local firearm dealer that prominently advertises a specialty in the AR semiautomatic rifle platform. Ii) Participant B received a long phone call from the cardiology group at a regional medical center, talked briefly with a medical laboratory, answered several short calls from a local drugstore, and made brief calls to a self-reporting hotline for a cardiac arrhythmia monitoring device. I) Participant A held conversations with a pharmacy specializing in chronic care, a patient service that coordinates management for serious conditions, several local neurology practices, and a pharmaceutical hotline for a prescription drug used solely to manage the symptoms and progression of relapsing-remitting multiple sclerosis. Tags: academic papers, anonymity, crowdsourcing, identification, metadata, phones, privacy, SMS, surveillance This one uses only anonymized call and SMS metadata to identify people who volunteered for the study. ![]() There have been several similar studies over the years. Using a crowdsourcing methodology, we demonstrate that telephone metadata is densely interconnected, can trivially be reidentified, and can be used to draw sensitive inferences. In this paper, we attempt to shed light on the privacy properties of telephone metadata. Several nations currently collect telephone metadata in bulk, including on their own citizens. One of the most controversial principles, both in the United States and abroad, is that communications metadata receives substantially less protection than communications content. Mitchell, “ Evaluating the privacy properties of telephone metadata“:Ībstract: Since 2013, a stream of disclosures has prompted reconsideration of surveillance law and policy. Jonathan Mayer, Patrick Mutchler, and John C.
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