1. Faculty of CIT, Sohar University, Sohar, Oman
2. Department of Computer Science, University of Surrey, Guildford, U.K.
3. Department of Computer Science, University of Lakki Marwat, Lakki Marwat, Khyber Pakhtunkhwa, Pakistan
4. School of Computer Science and Informatics, University of Cardiff, Cardiff, U.K.
5. CLOUDS Laboratory, School of Computing and Information Systems, University of Melbourne, Melbourne, VIC, Australia