1. School of Computer Science and Engineering, Hunan University of Science and Technology, Xiangtan, People's Republic of China
2. Hunan Provincial Key Laboratory of Network Investigational Technology, Hunan Police Academy, Changsha, People's Republic of China
3. Institute for Cyber Security, School of Computer Science and Engineering, University of Electronic Science and Technology of China, Chengdu, People's Republic of China
4. Department of Computer Science and Engineering, Dr. SPM International Institute of Information Technology, Naya Raipur, India
5. College of Computer Science and Electronic Engineering, Hunan University, Changsha, People's Republic of China
6. Deptment of Computer Science and Information Engineering, Providence University, Taichung, Taiwan