1. Faculty of Data Science, City University of Macau, Macau, China
2. College of Computer Science and Technology, Anhui University, Hefei, China
3. College of Computer and Data Science, Fuzhou University, Fuzhou, China
4. School of Cyber Engineering, Xidian University, Xi’an, China
5. School of Physical and Information Technology, Anhui University, Hefei, China
6. Secure Mobile Centre, School of Information Systems, Singapore Management University, Singapore