Network Based Immunization Against Computer Virus

Different from immunization strategy of single-chipped computer, this paper proposes the network-based immune system which takes the entire network as integrated one by the advantage of collaboration of the network. To grasp the main factors that effect the virus' spreading, the paper first constructs a discrete model for the virus. Based on the model, the paper presents two immune strategies: immune on the nodes with larger degree and immune around the infected nodes. Also different from the other papers about the immunization, this paper presents not only the immune strategies, but also theoretical analysis. Just by those theoretical analysis, the paper proposes algorithms for source tracing immunization and successive immunization which can assure to clean all the virus in a subnet. The paper also carried on simulation tests for the immune strategies which confirm our algorithms and also get some useful conclusions for the real immune activities