Part B: Security Analysis of LEACH and PEGASIS Routing Protocols

This report, Part B, analyzes the security aspects of LEACH and PEGASIS routing protocols in wireless sensor networks (WSNs). It builds upon Part A, which introduced the protocols' fundamental concepts. Part B delves into security threats, specifically the sinkhole attack in LEACH and the hello flood attack in PEGASIS, detailing their mechanisms and impact. The report then outlines countermeasures to mitigate these attacks, such as methods for detecting and preventing sinkhole attacks by identifying compromised cluster heads, and security structures based on signal power for detecting malicious nodes. A comparative analysis highlights the differences between LEACH and PEGASIS, considering their hierarchical structures, data aggregation methods, and suitability for different network scenarios. The conclusion summarizes the key findings and emphasizes the importance of understanding these security issues for the effective design and deployment of secure and energy-efficient WSNs. The report references several research papers to support its analysis.