1. A method of providing security in a computing system, comprising: receiving a request to create an isolated execution environment within a host environment controlled by an operating system executing on the computing system; creating a new process server to support communications with processes executing in the isolated execution environment; assigning a security context to the new process server; and creating the isolated execution environment associated with the new process server and controlled by the operating system, wherein the processes execute at the security context within the isolated execution environment and isolated from the host environment.