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dc.contributor.author
Gervais, Arthur
dc.contributor.author
Ritzdorf, Hubert
dc.contributor.author
Lucic, Mario
dc.contributor.author
Capkun, Srdjan
dc.date.accessioned
2017-06-11T20:55:57Z
dc.date.available
2017-06-11T20:55:57Z
dc.date.issued
2015
dc.identifier.uri
http://hdl.handle.net/20.500.11850/106717
dc.description.abstract
Large-scale datasets of consumer behavior might revolutionize the way we gain competitive advantages and increase our knowledge in the respective domains. At the same time, valuable datasets pose potential privacy risks that are difficult to foresee. In this paper we study the impact that the prices from consumers’ purchase histories have on the consumers’ location privacy. We show that using a small set of low-priced product prices from the consumers’ purchase histories, an adversary can determine the country, city, and local retail store where the transaction occurred with high confidence. Our paper demonstrates that even when the product category, precise time of purchase, and currency are removed from the consumers’ purchase history (e.g., for privacy reasons), information about the consumers’ location is leaked. The results are based on three independent datasets containing thousands of low-priced and frequently-bought consumer products. In addition, we show how to identify the local currency, given only the total price of a consumer purchase in a global currency (e.g., in Bitcoin). The results show the existence of location privacy risks when releasing consumer purchase histories. As such, the results highlight the need for systems that hide transaction details in consumer purchase histories.
dc.language.iso
en
dc.publisher
International Association for Cryptologic Research (IACR)
dc.subject
Applications
dc.subject
Anonymity
dc.title
Quantifying Location Privacy Leakage from Transaction Prices
dc.type
Report
ethz.journal.title
Cryptology ePrint Archive
ethz.journal.volume
2015
ethz.journal.issue
496
ethz.size
17 p.
ethz.notes
Received 25 May 2015.
ethz.publication.place
Santa Barbara, CA
ethz.publication.status
published
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02150 - Dep. Informatik / Dep. of Computer Science::02660 - Institut für Informationssicherheit::03755 - Capkun, Srdan / Capkun, Srdan
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02150 - Dep. Informatik / Dep. of Computer Science::02660 - Institut für Informationssicherheit::03755 - Capkun, Srdan / Capkun, Srdan
ethz.identifier.url
https://eprint.iacr.org/2015/496
ethz.date.deposited
2017-06-11T20:56:08Z
ethz.source
ECIT
ethz.identifier.importid
imp593653ac7fdca81863
ethz.ecitpid
pub:166988
ethz.eth
yes
ethz.availability
Metadata only
ethz.rosetta.installDate
2017-07-19T13:01:38Z
ethz.rosetta.lastUpdated
2018-11-02T20:30:39Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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