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Trust is an important factor in transferring data from the source to destination in wireless sensor networks. If any sensor node fails to transfer the data, the Dynamic Source Protocol calculates the alternate path. Currently, the Dynamic Source Protocol does not have any built-in functionality to calculate an alternate path if the path has a malicious node. Intruder detection system can detect the malicious node. However, intruder detection system is very expensive for wireless sensor networks and there is no guarantee in detecting a malicious node. In the current research, a trust-based approach is recommended to minimize the overheads of intruder detection system and detect the abnormal behavior nodes.
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