We have witnessed the dramatic increase of the use of information technology in every aspect of our lives. It also opens new interesting topics. For example, user Interactions in online social networks in principle provide a wealth of data to analyze so we can understand many aspects of the societal changes. The Social Networks and Big Data Symposium offers a timely venue for researchers and industry partners to present and discuss their latest results in the fields of Social Networks and Big Data.The Social Networks and Big Data Symposium solicits original contributions in, but not limited to, the following typical areas: Social networks modeling, analysis, and management Social networks technology and applications Visualization of social networks Mathematical modelling of social spreading processes Mobile social network Corpora and collections of Big Data Networking for Big Data Security and privacy in social networks Security and privacy in Big Data Social network forensics Digital forensics in Big Data