Embodiments are directed to establishing a secure connection between computing systems and to providing computer system virtualization on a secure computing device. In one scenario, a computer system receives a request that at least one specified function be initiated. The request includes user credentials and a device claim that identifies the computing device. The computer system authenticates the user using the received user credentials and determines, based on the device claim, that the computing device is an approved computing device that has been approved to initiate performance of the specified function. Then, upon determining that the user has been authenticated and that the computing device is approved to initiate performance the specified function, the computer system initiates performance of the specified function.