Compensation of Coordinated Attacks in Underwater Internet of Sensor Networks

Besides movement of underwater nodes, the underwater wireless sensor networks (UWSNs) are susceptible to coordinated attacks by the malicious underwater nodes. This hurts the localization performance of UWSNs. To alleviate this issue, two types of malicious attacks, namely, symmetric coordinated attacks and asymmetric coordinated attacks have been considered here. The mathematical formulation of coordinated attacks in presence of malicious underwater nodes has been attempted first. Consequently, a Geometric Node Localization (GNL) algorithm has been proposed to quantify the degradation of localization performance due to the malicious nodes and to mitigate the stratification effect and coordinated attacks. The localization errors concerning the number of anchor nodes are compared with standard methods. The proposed Geometric Node Localization (GNL) algorithm improves the localization performance by 31.26 % and reduces velocity root mean square (RMS) error by 31.31% up to 550 meters. It is expected that an inclusive implementation of the said method can enable the localization of a target in the underwater Internet of Sensor Networks (uIoSNet).