Physical Layer Security Analysis of RIS-assisted Hybrid FSO/RF Networks for Secure IoT Communications under Potential Eavesdropping Attacks

In this research, a RIS-assisted hybrid FSO/RF system is proposed to enhance the security of IoT networks in the presence of an eavesdropper. Analytical expressions for key secrecy performance metrics, including the secrecy outage probability and effective secrecy throughput are derived. Numerical results are further presented to investigate the effects of several system parameters on network security, providing valuable design insights for the development of secure IoT networks.