Journal of Xidian University ›› 2016, Vol. 43 ›› Issue (2): 199-204.doi: 10.3969/j.issn.1001-2400.2016.02.034

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SybilGrid: Sybil detection method based on directed social networks

WANG Yongcheng1;MENG Yanhong2   

  1. (1. National Key Lab. of Science and Technology on Blind Signal Processing, Chengdu  610041, China;
    2. School of Telecommunication Engineering, Xidian Univ., Xi'an  710071, China)
  • Received:2015-09-03 Online:2016-04-20 Published:2016-05-27
  • Contact: WANG Yongcheng E-mail:407541127@qq.com

Abstract:

A Sybil detection method based on the random walk strategy is proposed to detect the Sybil nodes in the directed social network. The performance of the algorithm is evaluated by collecting the real social network topological data on Sina Weibo, and the effectiveness of the algorithm is proved. In addition, compared with the existing SybilDefender method, it is found that the false alarm rate of SybilDefender is about 1.6 times as great as SybilGrid. Meanwhile, to achive the same false alarm probability, the random walk length required by SybilGrid is much shorter, meaning that the detection efficiency of SybilGrid is higher.

Key words: Sybil attack, social networks, random walk