DRM (Digital Rights Management) is the technology to protect multimedia content delivered via streaming or download. The multimedia content provider or service provider encrypts the content through a packaging process. When the user replays the multimedia content, it checks the user¡¯s privilege and validity, and after the user has ¡°passed¡±, issues a license key to decrypt the content in order to prevent piracy.

Media authentication is the technology that allows only authorized users to play multimedia content by assigning access privileges for streaming multimedia content. This authentication technology can verify that the user¡¯s authentication privilege has changed when an unauthorized user attempts to access the content using a path attained through a source file of a Web browser or some other means. It then limits the user¡¯s access to the content, satisfying the needs both of user management and content security.

There are many means of attempting the illegal distribution of streaming multimedia content. Some of these include recording content during playback, or through packet analysis. Recording interception technology can prevent such attempts at their origin. When a recording program is detected, the program is terminated, or the multimedia content is stopped to protect it.
When recording is attempted through a screen capture method, the recorded images are distorted, ensuring that the recording is intercepted at its origin, regardless the recording method.