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Shall I post this now? Optimized, delay-based privacy protection in social networks
Parra Arnau, Javier; Gómez Mármol, Félix; Rebollo Monedero, David; Forné Muñoz, Jorge
Universitat Politècnica de Catalunya. Departament d'Enginyeria Telemàtica; Universitat Politècnica de Catalunya. ISG - Grup de Seguretat de la Informació
The final publication is available at Springer via http://dx.doi.org/10.1007/s10115-016-1010-4
Despite the several advantages commonly attributed to social networks such as easiness and immediacy to communicate with acquaintances and friends, significant privacy threats provoked by unexperienced or even irresponsible users recklessly publishing sensitive material are also noticeable. Yet, a different, but equally significant privacy risk might arise from social networks profiling the online activity of their users based on the timestamp of the interactions between the former and the latter. In order to thwart this last type of commonly neglected attacks, this paper proposes an optimized deferral mechanism for messages in online social networks. Such solution suggests intelligently delaying certain messages posted by end users in social networks in a way that the observed online activity profile generated by the attacker does not reveal any time-based sensitive information, while preserving the usability of the system. Experimental results as well as a proposed architecture implementing this approach demonstrate the suitability and feasibility of our mechanism.
Peer Reviewed
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació
Social networks
Time-based profiling
online social networks
privacy-enhancing technology
Shannon’s entropy
privacy-utility trade-off
Xarxes socials en línia
info:eu-repo/semantics/submittedVersion
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