of the Requirements

To my wife Farjana Sikder Jemy, my father Nesar Uddin Khan and mother Sufia Khanam- the most important persons in my life, whose dreams inspired me to be here today ACKNOWLEDGEMENTS First of all, I would like to give my heartiest thanks to my supervising professor Dr. Matthew Wright for giving me the opportunity to work with him in this research project and pursue my thesis in Information Security. It was an excellent experience to do research under his guidance where I learnt a lot from him. As a mentor, he is a wonderful person. I also wish to express my gratefulness for him for providing me financial support for my studies. Dr. Wright is one of the most respectful persons in my life and will always be the inspiration of my any future success. I would like to thank Dr. Nikola Stojanovic and Dr. Gergely Zaruba for their interest in my research and being part of my thesis committee. I will miss my days in iSec lab at UTA where I spent a memorable part of my life with the members of the lab. I wish to give special thanks to Tara Mallesh for her continuous cooperation in my research work. I also want to show appreciation to Bikas Gurung and Qi Dong for their friendly accompany and cooperation. Most importantly I would like to thank my parents and my wife. My parents’ dreams inspired me to come so far till now. Their high ambition taught me to think always for the bigger. My wife, without whom it would be impossible to overcome huge mental stress here in my US life, is always my best accompany and inspiration behind everything. I wish to give her big thanks for helping me in my thesis writing. I also want to mention my younger brother Sheedy and elder sister Tonni’s names for their support. I am always grateful to these persons for being with me in all my ups and downs of my life