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Network monitoring is a basic component for intrusion detection and also an energy-expensive task. However in the existing works the contradiction between energy efficiency and security of network monitoring isnpsilat well handled. In this paper, we propose SpyMon, a network monitoring mechanism for the sensor network. To achieve energy-efficiency and reliability, a subset of sensor nodes are randomly selected as monitors in the network and each sensor node is monitored by at least k nodes. For the resistance against the attacks, the monitors are protected from identity exposure to prevent them becoming the explicit targets of adversaries. A collective monitoring triggering scheme is also proposed to further improve the capability and reliability of monitoring. Our analysis shows that SpyMon is resilient against node compromise while attaining energy efficiency.
Date of Conference: Sept. 29 2008-Oct. 2 2008