A method and system for providing anti-piracy protection to a software application on a server connected to a target machine over a network is described. The method includes providing a server with a server application for modifying the application software based on a machine fingerprint of the target machine, and for receiving and storing the application software. The server application receives the target machine fingerprint in conjunction with a license transaction between the server and the target machine. The server then modifies the application software using the received machine fingerprint, and provides the resulting modified software to the target machine, wherein the supplied software will only operate correctly on the target machine.