embodiments of the present invention provide a method , apparatus and system for the secure distribution of content such as audiovisual content in a way that prevents users from misusing the content and provides a mechanism for tracking pirated material back to the original location of misappropriation . a security device , in accordance with one embodiment of the present invention , incorporates encryption methods to insure the broadcast encryption key remains secure . a marking device , in accordance with one embodiment of the present invention , incorporates , for example , digital watermarking methods that attach to the content information to identify a location of origin of the misappropriation , such as a set - top box and / or smart card .