Artificial Intelligence and Security 5th International Conference, ICAIS 2019, New York, NY, USA, July 26-28, 2019, Proceedings, Part IV - Sun, Xingming; Sun, Xingming; Pan, Zhaoqing; Pan, Zhaoqing; Bertino, Elisa; Bertino, Elisa (Springer International Publishing : Imprint: Springer, 2019)