Virus spreading model based on degree correlation and its analysis

In recent years the virus spreading has produced a series threat to network security. The research shows that the Internet topology has a great relationship with the virus spreading. The degree correlation is as an important characteristic of the Internet topology, its changes means changing the Internet topology structure. According to analyzing the degree characteristic correlated, we find that the Internet disassortativity is weaken. The experiments about virus spreading are done on the networks what are produced by DPR algorithm under different associativity coefficient aiming to study the spreading rate, steady infection rate and spreading critical value; Then a virus spreading model suited for the Internet is proposed based on the traditional virus spreading model SIS (susceptible-infected-susceptible). We do the experiments about the virus spreading and analyze the characteristic of virus spreading under steady and transient. Finally the protection policy of the virus spreading is discussed according to the simulation experiments results.