The node replication attack is one of the notorious attacks that can be easily launched by adversaries in wireless sensor networks.\nA lot of literatures have studied mitigating the node replication attack in static wireless sensor networks. However, it is more\ndifficult to detect the replicas in mobile sensor networks because of their node mobility. Considering the limitations of centralized\ndetection schemes for static wireless sensor networks, a few distributed solutions have been recently proposed. Some existing\nschemes identified replicated attacks by sensing mobile nodes with identical ID but different locations. To facilitate the discovery\nof contradictory conflicts, we propose a hybrid local and global detection method. The local detection is performed in a local area\nsmaller than the whole deployed area to improve themeeting probability of contradictory nodes, while the distant replicated nodes\nin larger area can also be efficiently detected by the global detection. The complementary two levels of detection achieve quick\ndiscovery by searching of the replicas with reasonable overhead.
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