1. Institute of Computer Technologies and Information Security, Southern Federal University, Taganrog, Russia
2. Department of Information Technology, College of Computer and Information Sciences, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
3. Department of Applied Probability and Informatics, Peoples’ Friendship University of Russia (RUDN University), Moscow, Russia
4. College of Computer Science and Technology, Chongqing University of Posts and Telecommunications, Chongqing, China
5. Department of Mathematics & Mechanics, Saint Petersburg State University, Saint Petersburg, Russia