Research On The Virus Propagation In Search Social Network

With the rapid development of the mobile Internet,the virus propagation becomes more and more diverse.The mechanism of the virus propagation becomes a hot topic.The virus propagation is more than the traditional virus propagation that using the network structure by the point-to-point propagation.In recent years,there are a lot of cases that search engines spread the virus and most of them cause a lot of loses.Firstly,this paper considers the network structure,and analyzes the change trend of the network structure under the search engine condition.This paper discusses the dynamic evolution of the network.The social network with the search engine presents a new network form.This new network is defined as the Search Social network.Secondly,according to the process of the virus propagation,it discovers the virtual virus pool and the propagation wormhole of the search engine.Both the search engine and network structure work on the virus propagation process.This paper proposes the virus propagation model with the positive feedback effect.Thirdly,based on the proposed virus propagation model with the search engine,this paper quantitatively analyzes the influence degree of the search engine.This paper uses four metrics to compare the propagation effect: The virus infection density,the propagation velocity,the virus propagation threshold.At the same time,this paper calculates the sufficient condition of the infection balanced point,if users break the infection balanced point,the virus propagation will be broken.This sufficient condition of the virus propagation can plays a guide.Finally,this paper uses four real social network datasets: Peer-to-peer dataset,CDBLP(China Digital Bibliography and Library project)dataset,Facebook dataset,Twitter dataset.Experiments are used to verify the propagation model and analysis in search engine.This paper compares the infection density and the propagation speed,and proves that the search engine plays an important role in the process of virus propagation.Experiments show that the search engine is a strong power to promote the virus propagation.Compared the case without the search engine,the virus propagation velocity is quicker,the infection density is larger,the propagation threshold is lower.The experimental results are consistent with the theoretical model and the model analysis,which proves that the search engine greatly accelerates the spread of the virus in social networks.