Optimized, direct sale of privacy in personal data marketplaces

Very recently, we are witnessing the emergence of a number of start-ups that enables individuals to sell their private data directly to brokers and businesses. While this new paradigm may shift the balance of power between individuals and companies that harvest and mine data, it raises some practica...

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Autor: Parra Arnau, Javier|||0000-0002-1772-1088
Tipo de recurso: artículo
Fecha de publicación:2018
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/404198
Acceso en línea:https://hdl.handle.net/2117/404198
https://dx.doi.org/10.1016/j.ins.2017.10.009
Access Level:acceso abierto
Palabra clave:Data protection.
User privacy
Disclosure risk
Data brokers
Disclosure-money trade-off
Protecció de dades
Àrees temàtiques de la UPC::Informàtica
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spelling Optimized, direct sale of privacy in personal data marketplacesParra Arnau, Javier|||0000-0002-1772-1088Data protection.User privacyDisclosure riskData brokersDisclosure-money trade-offProtecció de dadesÀrees temàtiques de la UPC::InformàticaVery recently, we are witnessing the emergence of a number of start-ups that enables individuals to sell their private data directly to brokers and businesses. While this new paradigm may shift the balance of power between individuals and companies that harvest and mine data, it raises some practical, fundamental questions for users of these services: how they should decide which data must be vended and which data protected, and what a good deal is. In this work, we investigate a mechanism that aims at helping users address these questions. The investigated mechanism relies on a hard-privacy model and allows users to share partial or complete profile data with broker and data-mining companies in exchange for an economic reward. The theoretical analysis of the trade-off between privacy and money posed by such mechanism is the object of this work. We adopt a generic measure of privacy although part of our analysis focuses on some important examples of Bregman divergences. We find a parametric solution to the problem of optimal exchange of privacy for money, and obtain a closed-form expression and characterize the trade-off between profile-disclosure risk and economic reward for several interesting cases. Finally, we evaluate experimentally how our approach could contribute to privacy protection in a real-world data-brokerage scenario.This work was partly funded by the European Commission through the H2020 project “CLARUS”, as well as by the Spanish Ministry of Economy and Competitiveness (MINECO) through the project “Sec-MCloud”, ref. TIN2016- 80250-R. J. Parra-Arnau is the recipient of a Juan de la Cierva postdoctoral fellowship, FJCI-2014-19703, from the MINECO20182018-01-0120242024-03-12journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/404198https://dx.doi.org/10.1016/j.ins.2017.10.009reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)InglésengMinisterio de Economía y Competitividad http://doi.org/10.13039/501100003329 FJCI-2014-19703 FJCI-2014-19703open accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/4041982026-05-27T15:37:01Z
dc.title.none.fl_str_mv Optimized, direct sale of privacy in personal data marketplaces
title Optimized, direct sale of privacy in personal data marketplaces
spellingShingle Optimized, direct sale of privacy in personal data marketplaces
Parra Arnau, Javier|||0000-0002-1772-1088
Data protection.
User privacy
Disclosure risk
Data brokers
Disclosure-money trade-off
Protecció de dades
Àrees temàtiques de la UPC::Informàtica
title_short Optimized, direct sale of privacy in personal data marketplaces
title_full Optimized, direct sale of privacy in personal data marketplaces
title_fullStr Optimized, direct sale of privacy in personal data marketplaces
title_full_unstemmed Optimized, direct sale of privacy in personal data marketplaces
title_sort Optimized, direct sale of privacy in personal data marketplaces
dc.creator.none.fl_str_mv Parra Arnau, Javier|||0000-0002-1772-1088
author Parra Arnau, Javier|||0000-0002-1772-1088
author_facet Parra Arnau, Javier|||0000-0002-1772-1088
author_role author
dc.subject.none.fl_str_mv Data protection.
User privacy
Disclosure risk
Data brokers
Disclosure-money trade-off
Protecció de dades
Àrees temàtiques de la UPC::Informàtica
topic Data protection.
User privacy
Disclosure risk
Data brokers
Disclosure-money trade-off
Protecció de dades
Àrees temàtiques de la UPC::Informàtica
description Very recently, we are witnessing the emergence of a number of start-ups that enables individuals to sell their private data directly to brokers and businesses. While this new paradigm may shift the balance of power between individuals and companies that harvest and mine data, it raises some practical, fundamental questions for users of these services: how they should decide which data must be vended and which data protected, and what a good deal is. In this work, we investigate a mechanism that aims at helping users address these questions. The investigated mechanism relies on a hard-privacy model and allows users to share partial or complete profile data with broker and data-mining companies in exchange for an economic reward. The theoretical analysis of the trade-off between privacy and money posed by such mechanism is the object of this work. We adopt a generic measure of privacy although part of our analysis focuses on some important examples of Bregman divergences. We find a parametric solution to the problem of optimal exchange of privacy for money, and obtain a closed-form expression and characterize the trade-off between profile-disclosure risk and economic reward for several interesting cases. Finally, we evaluate experimentally how our approach could contribute to privacy protection in a real-world data-brokerage scenario.
publishDate 2018
dc.date.none.fl_str_mv 2018
2018-01-01
2024
2024-03-12
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/404198
https://dx.doi.org/10.1016/j.ins.2017.10.009
url https://hdl.handle.net/2117/404198
https://dx.doi.org/10.1016/j.ins.2017.10.009
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Ministerio de Economía y Competitividad http://doi.org/10.13039/501100003329 FJCI-2014-19703 FJCI-2014-19703
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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