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Analysis of a Delayed Internet Worm Propagation Model with Impulsive Quarantine Strategy
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Analysis of a Delayed Internet Worm Propagation Model with Impulsive Quarantine Strategy
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Journal Article
Analysis of a Delayed Internet Worm Propagation Model with Impulsive Quarantine Strategy
2014
Overview
Internet worms exploiting zero-day vulnerabilities have drawn significant attention owing to their enormous threats to Internet in the real world. To begin with, a worm propagation model with time delay in vaccination is formulated. Through theoretical analysis, it is proved that the worm propagation system is stable when the time delay is less than the threshold τ 0 and Hopf bifurcation appears when time delay is equal to or greater than τ 0 . Then, a worm propagation model with constant quarantine strategy is proposed. Through quantitative analysis, it is found that constant quarantine strategy has some inhibition effect but does not eliminate bifurcation. Considering all the above, we put forward impulsive quarantine strategy to eliminate worms. Theoretical results imply that the novel proposed strategy can eliminate bifurcation and control the stability of worm propagation. Finally, simulation results match numerical experiments well, which fully supports our analysis.
