Research On Propagation Modeling Of Mobile Malware Based On Complex Network

With the rapid development of mobile Internet,all kinds of malicious propagation of mobile malware occur frequently.The malicious behavior of mobile malware causes serious losses to mobile network users,and brings bad effects to the society.The goal of mobile network security is to study the propagation law of mobile malware,put forward constructive suppression strategies,and reduce the harm of mobile malware to mobile network users and society.In this paper,two propagation models of mobile malware are proposed based on the complex network,which are simulated in different network structures.The main contents of this paper are as follows:?Aiming at the fact that the heterogeneity of mobile network nodes is not considered in the existing research,an ONLB propagation model of destructive viruses based on heterogeneous mobile networks is proposed.According to the heterogeneity of network nodes,the status is divided into the new system status and the old system status.At the same time,considering the characteristics of the latent and the outbreak of the destructive virus,the status is divided into the latent status and the outbreak status.The transmission threshold and equilibrium point of destructive virus are obtained by theoretical calculation.WhenR₀ is greater than 1,the positive equilibrium point of the model is unstable;when R₀ is less than 1,the positive equilibrium point of the model is locally asymptotically stable.Through the simulation of virus propagation on NW small-world network and BA scale-free network.The analysis shows that the propagation speed of destructive virus in the two networks is different,NW network has virus-free state,but BA network does not.?Aiming at the problems that the existing research does not consider the inducibility of mobile malware to construct a propagation model,a new URI propagation model of induced mobile malware is proposed.Considering that network users will react differently to induced mobile malware,the network nodes are divided into ordinary user nodes,receiving user nodes,and infected user nodes.Based on the average field theory,the model is established and analyzed.It is concluded that the model has a toxic equilibrium point and a non-toxic equilibrium point,and is locally stable at the non-toxic equilibrium point.Based on the analysis of the complex network model,the propagation threshold is calculated,and the propagation threshold is related to the network average degree.Through experiments in three real network structures,it is found that induced malware in different propagation networks has different propagation speeds,and the size of node degree is proportional to the infection of induced malware.