Rafi Ullah Khan was born in Peshawar, KPK, Pakistan, in 1984. He received his PhD in Computer Science from the Capital University of Science and Technology, Islamabad, Pakistan. He completed his M.S. in Information Technology from the Institute of Management Sciences, Peshawar, Pakistan and B.S. in Computer Science from Islamia College, University of Peshawar. His area of interest includes Privacy, the Internet of Things, Sentiment Analysis, Text Mining, Machine Learning, and Computer Networks. His research papers have been published in international journals, conferences, and book chapters. He is also an Editor-in-Chief of the book: Protecting User Privacy in Web Search Utilization. He worked as Lecturer at Preston University Peshawar Campus, Iqra National University Peshawar, and Farabi College Peshawar from 2007 to 2011. He has been working as Senior Lecturer at the ICS&IT, The University of Agriculture Peshawar, since 2011. He is a former member of the Parallel Computing Network Group at Capital University of Science and Technology, Islamabad and a Lead and Founding member of Zero One Research Group at the ICS&IT, The University of Agriculture Peshawar.(af1d5295-068a-428b-8013-7b8d6ba5225c)