This book presents the outcomes of the 2020 International Conference on Cyber Security Intelligence and Analytics (CSIA 2020), an international conference dedicated to promoting novel theoretical and applied research advances in the interdisciplinary field of cyber security, particularly focusing on threat intelligence, analytics, and countering cyber crime. The conference provides a forum for presenting and discussing innovative ideas, cutting-edge research findings, and novel techniques, methods and applications on all aspects of Cyber Security Intelligence and Analytics. The 2020 International Conference on Cyber Security Intelligence and Analytics (CSIA 2020) is held at Feb. 28-29, 2020, in Haikou, China, building on the previous successes in Wuhu, China (2019)