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Influence of removable devices on computer worms: dynamic analysis and control strategies. (English) Zbl 1219.37065
Summary: Worms spreading via both Web-based scanning and removable devices account for a major part of threats on internet. However, their dynamical behavior and controlling methods remain unclear. As a result, we present a computer worm model incorporating specific features unique to those worms, in this paper. The threshold value ${R}_{0}$ determining whether the worms die out is obtained. Theoretical analysis shows that if ${R}_{0}<1$ the disease-free equilibrium is globally asymptotically stable; otherwise, the disease will be prevalent. Additionally, some control strategies are given. Our results are illustrated by numerical simulations.
##### MSC:
 37N35 Dynamical systems in control 68M11 Internet topics 34D23 Global stability of ODE 94A13 Detection theory