LAUSR

In recent years, cyber security and privacy is an essential need for modern society where information technology and services pervade every aspect of our lives. Specially, security and privacy of multimedia big data in the critical infrastructure (a nation’s strategic national assets, i.e. banking and finance, communications, emergency services, energy, food chain, health, water, mass gatherings, transport, etc) which is an essential part of our daily life to access different systems, services and applications is a serious issue [4, 5, 7–9]. However, it is challenging to achieve, as technology is changing at rapid speed and our systems turn into ever more complex. The explosion of multimedia big data has created unprecedented opportunities and fundamental security challenges as they are not just big in volume, but also unstructured and multi-modal. Therefore, the papers of this special issue address variety of security and privacy challenges and developments in multimedia big data in critical infrastructure from the perspective of providing security awareness and its best practices for the real world and also emphasizes many open questions [3, 10, 11, 13, 15]. We anticipate that papers of this special issue will open new entrance for further research and technology improvements in this important area. Papers were invited for this special issue considering aspects of this problem, including: