This paper describes a new model to predict the trustworthiness of the IaaS virtual platform. It also outlines the threats and predicts the growth rate of exposed VM in cloud environment and it will ensure the security framework of VM in cloud environment. It will also help the cloud service providers (CSP) to take in time decision to upgrade the security policies in the cloud. It also explores the behavior of infectious virtual machines using predator-prey model based on Lotka-Volterra equations and the dynamics of exposed virtual machine (EVM) and infectious virtual machine (IVM) in the cloud environment.

cloud computing, cloud virtualization security, predator-prey model, exposed virtual machine, infectious virtual machine.