Parrot dandelion optimizer-based routing and spiking neural network enabled intrusion detection in underwater IoT

Underwater Internet of Things (IoT) is essential to monitor and gather real-time data in the marine environment. Due to the complicated and dynamic nature of this environment, underwater IoT networks face various security threats, such as eavesdropping, resource exhaustion, flooding, and blocking attacks. To overcome these issues, several intrusion detection systems (IDS) have been developed. However, the conventional IDS for underwater IoT are not effective at identifying threats owing to many false positives that take more time for computation. In this research, Parrot Dandelion Optimizer based Deep Spiking Neural Network (PDO_Deep SNN) is presented to detect intrusion in underwater IoT. Initially, an underwater IoT system model is simulated, and next, routing is done. Routing is done employing Parrot Dandelion Optimizer (PDO) by considering fitness parameters, like energy, trustworthiness, delay, selfishness, distance, and honesty. However, PDO is devised by incorporating Parrot Optimizer (PO) with Dandelion Optimizer (DO). Next, intrusion detection is conducted at the underwater thing layer based on the following steps. Firstly, the input log file is acquired from the BoT-IoT dataset. Afterwards, data is normalized using tanh-estimator normalization and then, feature selection is performed by Mutual Information. Lastly, intrusion is detected utilizing Deep Spiking Neural Network (Deep SNN), and it is tuned employing a PDO that is designed by combining PO with DO. Additionally, PDO attained better experimental results with an end-to-end delay, distance, residual energy, bandwidth, failure rate, and energy overhead of 0.672 ms, 5.930 m, 31.575 J, 7.251 Hz, 0.489, and 0.495. Furthermore, PDO_Deep SNN acquired a True Positive Rate (TPR) of 91.904% and a True Negative Rate (TNR) of 91.980%.