1. A method for protecting electronic media content from unauthorized use, the method including: receiving a request to access a piece of electronic media content; monitoring at least one system interface for electronic data to be transferred to an output device, the monitoring including: receiving at least a portion of the electronic data to be transferred to the output device; generating a first identifier associated with the at least a portion of the electronic data; comparing the first identifier with a second identifier; and taking at least one predefined defensive action if the first identifier is related to the second identifier in a predefined manner, wherein the predefined defensive action is selected from the group consisting of: modifying at least a portion of the electronic data, and preventing the transfer of at least a portion of the electronic data to the output device via the system interface.