Design of a P2P network that protects users’ privacy in front of Web Search Engines
Issue date
2015Author
Romero-Tris, Cristina
Castellà Martínez, Damià
Viejo Galicia, Alexandre
Castellà Roca, Jordi
Mateo-Sanz, Josep María
Suggested citation
Romero-Tris, Cristina;
Castellà Martínez, Damià;
Viejo Galicia, Alexandre;
Castellà Roca, Jordi;
Solsona Tehàs, Francesc;
Mateo-Sanz, Josep María;
.
(2015)
.
Design of a P2P network that protects users’ privacy in front of Web Search Engines.
Computer Communications, 2015, vol. 57, p. 37-49.
https://doi.org/10.1016/j.comcom.2014.09.003.
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Show full item recordAbstract
Web Search Engines store and analyze queries made by their users in order to build their profiles and
offer them personalized search results (i.e., results are ranked according to each user’s preferences). Even
though this service is positive for the users, their profiles may contain sensitive information that can
threaten their privacy. Literature in this field stresses the existence of a trade-off between the level of privacy
achieved and the quality of service received. Current proposals try to maximize this trade-off, yet we
argue that there is still room for improvement. In this paper, we present a new approach which improves
the trade-off by grouping users who share similar profiles. Moreover, our new proposal is based on a
hybrid P2P architecture that outperforms current schemes in terms of scalability. The proposed system
has been tested in terms of performance and privacy achieved, using real data from the AOL dataset. Simulation
results show that: (i) the system protects users’ privacy when they behave honestly, and penalizes
selfish users; (ii) it supports a large number of users; (iii) the runtime required to group users is
affordable; and (iv) groups are dynamic and their topology is unpredictable, which we argue that is positive
from the privacy point of view.
Is part of
Computer Communications, 2015, vol. 57, p. 37-49European research projects
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