1. Department of Information Systems and Technologies, University of Library Studies and Information Technologies, 1784 Sofia, Bulgaria
2. Department of Cybersecurity, International Information Technology University, Almaty 050000, Kazakhstan
3. Department of Information Technology, University of Tabuk, Tabuk 47731, Saudi Arabia
4. Department of Computer Science, Shaqra University, Shaqra 11961, Saudi Arabia
5. Department of Information Processes and Decision Support, Institute of Information and Communication Technologies, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria