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Discrete Dynamics in Nature and Society
Volume 2017, Article ID 8609082, 11 pages
Research Article

A Novel Computer Virus Propagation Model under Security Classification

1College of Cyber-Security and Information Law, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
2College of Computer Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, China

Correspondence should be addressed to Qingyi Zhu; nc.ude.tpuqc@yquhz

Received 28 February 2017; Revised 30 April 2017; Accepted 2 May 2017; Published 25 May 2017

Academic Editor: Jose R. C. Piqueira

Copyright © 2017 Qingyi Zhu and Chen Cen. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In reality, some computers have specific security classification. For the sake of safety and cost, the security level of computers will be upgraded with increasing of threats in networks. Here we assume that there exists a threshold value which determines when countermeasures should be taken to level up the security of a fraction of computers with low security level. And in some specific realistic environments the propagation network can be regarded as fully interconnected. Inspired by these facts, this paper presents a novel computer virus dynamics model considering the impact brought by security classification in full interconnection network. By using the theory of dynamic stability, the existence of equilibria and stability conditions is analysed and proved. And the above optimal threshold value is given analytically. Then, some numerical experiments are made to justify the model. Besides, some discussions and antivirus measures are given.