Systematic Survey on SSDF Attack and Detection Mechanism in Cognitive Wireless Sensor Network

Cognitive Wireless Sensor Network (CWSN) uses the spectrum wisely in comparison to a traditional Wireless Sensor Network (WSN). The technique which enables Cognitive Wireless Sensor Network in this regard is known as Opportunistic Spectrum Sensing (OSS) for date a transfer. The OSS process significantly reduces the collisions and the delays for data delivery in a network. Several security threats are possible in this process. The Denial of Service (DoS) attack makes the network unavailable to other users. One of the most serious DoS attacks on the OSS process is the Spectrum Sensing Data Falsification (SSDF) attack. This threat arises in joint spectrum sensing decisions. Here, a malicious node makes some modification on the spectrum sensing report and send it to the system making the decision in the collaborative spectrum sensing. As a result, the network gets a false collaborative decision regarding spectrum occupancy. In this survey, we addressed the SSDF attack and its related threats in CWSN, as well as the latest state-of-the-art SSDF attack detection techniques. We have also done an analysis of those existing attack detection techniques.