Minimizing trust leaks for robust Sybil detection

János Höner, Shinichi Nakajima, Alexander Bauer, Klaus Muller, Nico Görnitz

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Sybil detection is a crucial task to protect online social networks (OSNs) against intruders who try to manipulate automatic services provided by OSNs to their customers. In this paper, we first discuss the robustness of graph-based Sybil detectors SybilRank and Integro and refine theoretically their security guarantees towards more realistic assumptions. After that, we formally introduce adversarial settings for the graph-based Sybil detection problem and derive a corresponding optimal attacking strategy by exploitation of trust leaks. Based on our analysis, we propose transductive Sybil ranking (TSR), a robust extension to SybilRank and Integro that directly minimizes trust leaks. Our empirical evaluation shows significant advantages of TSR over state-of-the-art competitors on a variety of attacking scenarios on artificially generated data and real-world datasets.

Original languageEnglish
Title of host publication34th International Conference on Machine Learning, ICML 2017
PublisherInternational Machine Learning Society (IMLS)
Pages2391-2401
Number of pages11
Volume4
ISBN (Electronic)9781510855144
Publication statusPublished - 2017 Jan 1
Event34th International Conference on Machine Learning, ICML 2017 - Sydney, Australia
Duration: 2017 Aug 62017 Aug 11

Other

Other34th International Conference on Machine Learning, ICML 2017
CountryAustralia
CitySydney
Period17/8/617/8/11

ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Human-Computer Interaction
  • Software

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  • Cite this

    Höner, J., Nakajima, S., Bauer, A., Muller, K., & Görnitz, N. (2017). Minimizing trust leaks for robust Sybil detection. In 34th International Conference on Machine Learning, ICML 2017 (Vol. 4, pp. 2391-2401). International Machine Learning Society (IMLS).