Private Information Diffusion Control in Cyber Physical Systems: A Game Theory Perspective

Abstract

How to enhance security and stability of the cyber physical systems (CPSs) becomes a critical issue. In this paper, we propose a solution from the perspective of users' information diffusion process in CPCs. Relying on the virus propagation model, we conceive an idle-carrier-idle (ICI) model to characterize the information diffusion. Moreover, `effective diffusion rate' is defined in order to benchmark the efficiency of users' information diffusion. Based on the complex network theory, the threshold of the information diffusion both in homogenous networks and in free-scale networks is derived. Furthermore, a pair of game models are proposed for efficiently controlling the information diffusion and then for enhancing the security of the system. Furthermore, the equilibriums of two proposed games are demonstrated. Finally, essential numerical analysis and simulations show the effectiveness and feasibility of our proposed models.