A Comprehensive Study on Security Attacks and its Defense Techniques in Wireless Sensor Networks

In a variety of crucial applications, wireless sensor networks (WSNs) are being deployed regularly as the new speed-accelerating technology. Network efficiency and safety may be directly and physically impacted by any harm or vulnerability to data security. Key management, identification, and trust management in wireless sensing networks is one of the active study fields (WSN). It can be challenging to decide which key management strategies in a particular WSN application are optimal because researchers have offered a variety of protection schemes. This research study has thoroughly analysed the characteristics of various trust management, identity, and key management techniques as well as their potential applications to specific applications. Based on this review, the previously recommended methodology and advantages of the key management, verification, and trust systems in WSN are described. This study is finally concluded by describing potential future directions for IoT security, including the lack of organised adaptable algorithms for encryption, the use of algorithms based on machine learning to enhance security and related challenges, and the use of blockchain technology to deal with threats in IoT.