Mitigating security threats to large-scale cross border virtualization infrastructures

Cloud Computing is being a computation resources platform where it is possible to make up an environment flexible and scalable able to host any kind of services. In Cloud Computing, virtualization technologies provide all the needful capabilities to deploy services and run applications in an easy way. Furthermore, large-scale cross border virtualization infrastructures present promising landscape to cope with the ever increasing requirements of modern scientific and business applications. The large-scale cross border virtualization infrastructures can be seen as a federation of heterogeneous clouds. We present pragmatic analysis of the potential threats posed to the emerging large-scale cross border virtualization infrastructures. We have taken into consideration both internal and external threats to these infrastructures. We also drive the discussion considering a real model of cloud. In particular an infrastructure cloud is briefly presented; a useful scenario where to assess security threats and apply security solutions, that is the European Project, RESERVOIR