Abstract
A primary challenge of cloud computing is securing a virtualized environment. Virtual machine migration plays an important role in cloud infrastructure by enabling dynamic resource allocation and optimizing power consumption. However, it may adversely affect the security of the environment by facilitating the malware propagation process. In this paper, we introduce a novel approach to study the fast propagation of malware in the virtualized cloud environments. We develop Susceptible-Protected-Infected (SPI) cloud malware propagation model, a dynamic mathematical model to analyze the effect of self-defending VMs in the cloud environment with variable VM population and migration patterns. We analyze the proposed model using stability theory of differential equations and use epidemic modeling of malware propagation to evaluate strategies for malware propagation control. Finally, the experimental results confirm the validity of our analytical results.
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