Secure data transfer in Wireless Sensor Networks (WSN) is a challenge, as there are always chances for intruders to form a clone node to interrupt data packets. The proposed system Security in Wireless Sensor Networks by Broadcasting Location Claims (SWBC) engages with Area Based Clustering Detection (ABCD).ABCD divides the WSN into sub areas by implementing division of angle equally and nodes in the sub area elects a Witness node by using maximum neighbour nodes approach. Witness nodes are selected near to the central node to the transmission within the range. Witness nodes gets the location claims of the source node and central node manages the witness nodes where both central node and witness node identifies the intruder by broadcasting the location claims to all the nodes. By simulation SWBC gives the best security compared to the existing techniques like RED, and LSM. Simulation results enhance lifespan of WSNs, decreases the data traffic, detection of intruder before replication of data packets. © 2005 - 2014 JATIT & LLS. All rights reserved.