A new economy based on information in digital form has emerged.
People create, sell, and interact with multimedia content.
Current technology in network security protects contents during one stage of transmission. But, it cannot protect multimedia data through multiple stages of transmission entities, including human beings and machines. These concern have hindered the universal acceptance of digital multimedia. Meanwhile, watermarking as well as some extension of traditional security techniques may be perspective solutions to various multimedia security requirements. Based on the success of last year's three special sessions on multimedia content protections , we hope to continue this tradition to provide this forum for multimedia security issues.