International Journals of Advanced Information Science and Technology (IJAIST)
Wireless Sensor Network (WSN) consists of multiple low cost sensors, densely deployed to monitor a particular event. Each sensor is deployed in different location for different purpose. Because of the unbalanced conditions, results of a particular sensor or group of sensors might be manipulated. This might lead to inaccurate results. In order to avoid this, trust has been proposed as an efficient security mechanism for managing security at each node in the sensor network. In a wireless sensor network in addition to security, congestion can also significantly reduce the performance of the network.