Welcome to the Home Page for the International Workshop on Multimedia Privacy and Security. Founded in 2017 and co-located with the ACM Conference on Computer and Communication Security, we focus on the security and privacy issues that have developed as our society has become more interconnected, specifically with respect to multimedia data generated by the Internet of Things (IoT) and Web 2.0. Multimedia has expanded beyond the scope its original definition. With the rise of social media, large quantities of multimedia data (e.g., pictures, videos, audio, and computer graphics) can be created in a short period of time. When all these data are stored in a networked environment, many people can connect to it for viewing, sharing, commenting, and storing information. In addition, multimedia data in IoT networks serves a significant purpose as many people’s status, locations, and live actions can be seen, disseminated, tracked, commented on, and monitored in real time. IoT opens up many possibilities for attacks since more people can broadcast themselves and allow their networks to view and share in their lives. There are also increased criminal activities in this space such as online frauds, cyber piracy, unauthorized access, malware, denial of service, phishing, social engineering, and identity theft, many of which involve multimedia data and devices. All of these present new technical challenges in related areas in cyber security such as access control, user and device authentication, data leakage protection, privacy enhancing technologies, identity management, digital watermarking, digital right management, and digital forensics. Other new challenges include new problems such as large-scale attacks and prevention, the strength of security protection (e.g., common encryption algorithms), hiding malware within multimedia data, location-based privacy with high accuracy and anonymity. Our workshop will allow a specific venue for the presentation of work addressing these concerns, specific to the multimedia privacy and security sub-community.