关键词: 网络安全, 交互模型, 捕食者, 基本再生数, 平衡点

Abstract: Internet worms have drawn significant attention due to their enormous threats to the Internet. Inspired by the predator/prey model in the biology, this paper uses a mathematical model to study the interaction between worms（preys） and benign worms（predators）. A new interaction model is proposed to combat the propagation of worms. In virtue of this model, the basic reproduction number that governs whether or not a worm is extinct is obtained. The impact of different parameters of predators is studied. Simulation results show that the performance of the model is effective in combating such worms, in terms of decreasing the number of preys and reducing the prey propagation speed. Moreover, the model can propose some baselines in combating worms.

Key words: network security, interaction model, predator, basic reproduction number, equilibrium