Virtualization is creating a tornado of forces that could blow away security as we know it. The new hypervisor layer creating a new security attack vector; VM sprawl, where virtual machines become unmanaged and unprotected, and rogue VMs emerge. IBM, for instance, recently unveiled SHype, a new secure hypervisor technology that ties security policies to virtual machines. Security analysts caution against over-reaction, but the real threats end up being more theoretical than real now, but over time, this will become a real challenge.”]
Source: https://www.darkreading.com/analytics/vms-create-potential-risks