Document Type

Journal Article

Department/Unit

Department of Computer Science

Title

Investigation of dynamics of a virus–antivirus model in complex network

Language

English

Abstract

© 2014 Elsevier B.V. All rights reserved. In this paper, a new model of computer virus-antivirus propagation dynamics based on the topology nature of the Internet is established. We analyze theoretically the complex dynamics of the model and it is found that, unlike the existing models, the model admits two virus-free equilibria and possesses possibly two virus equilibria: one being antivirus-independent and the other being antivirus-dependent. Furthermore, the stability of virus-free equilibria is analyzed via a threshold value associated with the topology of the Internet and the model parameters. It is established that, if the threshold value is less than or equal to the unity, the virus-free equilibria are alternatively globally attractive, resulting in virus eradication, while if the threshold value is greater than unity, the antivirus-independent virus equilibrium is globally asymptotically stable, leading to virus diffusion, while the antivirus-dependent virus equilibrium also is globally asymptotically stable. Some numerical examples are presented to illustrate the analytical results.

Keywords

Complex networks, Computer virus, Dynamics, Virus-antivirus model

Publication Date

2015

Source Publication Title

Physica A: Statistical Mechanics and its Applications

Volume

421

Start Page

533

End Page

540

Publisher

Elsevier

DOI

10.1016/j.physa.2014.11.019

Link to Publisher's Edition

http://dx.doi.org/10.1016/j.physa.2014.11.019

ISSN (print)

03784371

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