Wireless Sensor Networks (WSNs) deployed in unattended environment energy recharging is difficult. WSN satisfy application specific QoS requirements i.e., reliability, timeliness, security and minimize energy consumption to prolong system useful lifetime with limited resources. The drawbacks of existing paper include redundancy management scheme that did not addresses heavy query traffic. Ambiguity in multi-path routing decision is due to higher level of intrusion tolerance rate. The proposed paper presented faith based neighbor weighted voting scheme to strengthen intrusion detection in WSN. It evaluates the dynamic radio range of neighbor nodes.