Abstract: A wireless sensor network is a collection of nodes organized in to a cooperative network. Each node consists of processing capability, multiple types of memory, a power source and actuators and sensors. This wireless sensor network is established in hostile and harsh environments like civil and military applications. This network is prone to various attacks. One of them is clone attack. An adversary can capture the node and replicate the node including its cryptographic information and deploy these nodes in the network. This will lead to several problems. This study proposes X-RED which detects clone nodes in the static wireless sensor networks in dynamically fast manner. It is a distributed protocol which computes the witness nodes dynamically. Researchers show that this protocol satisfies the major requirements of the distributed algorithms. Simulation results show that the protocol is more efficient than other exiting protocols in terms of detection probability.