1. A method of virtualized migration control comprising: executing a hypervisor with computing hardware to implement a virtual machine; responsive to detecting a removable storage medium communicatively coupled to said computing hardware, executing, through said hypervisor, an instance of a virtualized migration control appliance separate from said virtual machine; blocking said virtual machine from accessing data stored on said removable storage medium with said instance of said virtualized migration control appliance if at least one governing policy prohibits said virtual machine from accessing said data; executing a separate instance of said virtualized migration control appliance for each of at least one other removable storage medium communicatively coupled to said computing hardware; and responsive to determining that a communicatively coupled removable storage medium has been disconnected from said computing hardware, terminating, through said hypervisor, said instance of said virtualized migration control appliance corresponding to said disconnected removable storage medium.