Propagation Model Of Smartphones Virus For Hybrid Spread Mode Based On Bluetooth And SMS/MMS

As the number of smartphones increase, more and more mobile phone viruses emerge. They may cause interruption to the service of users, such as system damages^information leakage remote surveillance and economic losses. So security issues of smartphones cannot be ignored.It is necessary to make a study of the process of mobile virus propagation in detail in order to prevent the spread and outbreak of virus. At present there are many researchers have studied it, most researches remain in an ideal world, and they mainly study single-mode of mobile virus propagation which based on Bluetooth or SMS/MMS, but lack of considering the influence of the hybrid mode to virus spread. Therefore, the paper will focus on study hybrid mobile virus propagation model based on Bluetooth and SMS/MMS.Firstly, existing studies have many shortcomings such as which only consider the node itself and the impact of virus on mobile phones, and ignoring the impact of outer factors on the spread of the virus propagation, even default thinking of infection rate is a constant. The paper comes up with an improved algorithm, it will take into account ahead making mobile phone get immunity such as in advance to install anti-virus software and upgrade the system、moving velocity of nodes、the probability of turning on the Bluetooth and dynamic infective rate of nodes, and then building a new model with immune system called P-SIR,which takes Bluetooth-based for example. Simulation P-SIR model and classic model SIR by using Mat lab software, and then compares with each other. At the same time analyzing the influence to P-SIR model of five important parameters: Bluetooth signal coverage radius、distribution density of node、moving velocity of mobile phone、 dynamic infective rate of nodes and pre-immune factors. The results show that P-SIR model is more realistic simulation the smartphones virus propagation.In the end we suggest some measures to control the outbreak of mobile virus.Secondly, the current study gives more consideration to a single mode of virus spread model, but rarely consider the hybrid mode. So the paper will focus on the hybrid-based mode of smartphones virus propagation.We import a few important factors such as pre-immune mechanisms、dynamic infective rate and users gather density to build propagation model of Bluetooth-based and SMS/MMS-based smartphones virus on the basis of P-SIR, which is named of P-SEIR. Through using Mat lab software to simulate P-SEIR model and classic model SEIR, then analyzes the influence of users gather density(SMS/MMS-based) and pre-immune and dynamic infective rate(Bluetooth-based) and the average degree of nodes to the number of susceptible, infected and immune. The experimental results show that P-SEIR model could reflect the real virus propagation, and appropriately reducing users gather density, increasing users’pre-immune, reducing the average degree of nodes in order to inhibit the spread of mobile virus radically.