Affiliations: School of Information Science, Korean Bible
University, Seoul, Korea | Department of Information Security Engineering,
Soonchunhyang University, Asan, Korea | Department of Information and Communication
Engineering, Fukuoka Institute of Technology, Fukuoka, Japan
Note: [] Corresponding author: Leonard Barolli, Department of Information
and Communication Engineering, Fukuoka Institute of Technology, Fukuoka, Japan.
E-mail: barolli@fit.ac.jp