The SIS-BD Model of Computer Virus Spreading on Internet

This article from a new view of the complex network, utilizes in the stochastic theory approaches of the non-equilibrium statistical theory, has studied computer viruses on Internet spreading. In the SIS model foundation, we derive the birth-death master equation of the computer virus to disseminate on Internet, namely SIS-BD model, use the generating function method, and obtain the infection density function along with the time distribution rule which approach more in the real process about computer virus to disseminate (survival) on Internet. It proved on a side that the network virus will be able to coexistent with the Internet in very long period of time, provided a new view and some deeper understanding for the computer virus spreading theory research, and benefited to study and utilize the new immunity strategy to maintain the security on Internet.