DRM Digital Rights

Digital Rights Management (DRM) is the set of technologies, processes, and legal frameworks that enforce copyright on digital content. DRM systems encrypt video/audio/software, verify licenses before playback, prevent copying, and enforce usage restrictions (offline duration, simultaneous streams, geographic regions). Examples: Netflix's Widevine protection (can't screenshot), Apple's FairPlay (iTunes), Windows Content Protection (games). Behind the scenes: encrypted content + license server + device certificate + key management.