1. A method for generating policies for a new application using a virtualized environment prior to executing on a host operating system of a client device, the method comprising: installing, responsive to a request to install a new application on a host system and prior to allowing the new application to operate on the host system, the new application in a virtualized environment for execution; determining, for a first program execution restrictor of the virtualized environment, a set of policies for the new application, the set of policies allowing the new application to add specific program elements during execution of the new application in the virtualized environment; detecting, by the first program execution restrictor, that the specific program elements are added to the new application during execution of the new application in the virtualized environment; verifying, via the first program execution restrictor applying the set of policies, an absence of malicious behavior from the specific program elements detected to be added to the new application during execution of the new application in the virtualized environment, wherein malicious behavior includes accessing a memory address restricted from the new application; and executing, responsive to the verification, the new application on the host system, the host system having a second program execution restrictor that applies the set of policies when the new application executes on the host system.