Content protection and Digital Rights Management (DRM) are among those fields that get a lot of attention from content owners, consumers, scholars, and journalists. Unfortunately, they have a terrible reputation. This is partly due to a lack of available information, and many misconceptions. This book attempts to demystify the topic. The first part of the book builds the theoretical foundations of DRM. The second part of the book describes the main deployed solutions, such as Pay TV, Microsoft PlayReady and AACS. The third part of the book takes a view to the future and to exploratory topics, such as interoperability.