A Comparison Based Clustering Algorithm to Counter SSDF Attack in CWSN

Cognitive Wireless Sensor Networks follow IEEE 802.22 standard which is based on the concept of cognitive radio. In this paper we have studied the Denial of Service (DOS) attack. Spectrum Sensing Data Falsification (SSDF) attack is one such type of DOS attack. In this attack the attackers modify the sensing report in order to compel the Secondary User (SU) to take a wrong decision regarding the vacant spectrum band in other's network. In this paper we have proposed a similarity-based clustering of sensing data to counter the above attack.