This book elucidates the concepts and innovative models around prospective developments with respect to information security. It talks in detail about the various methods and applications of this subject. Information security refers to the practice of safeguarding the information from theft, unauthorized use, modification, distortion, inspection, destruction, etc. It consists of IT security and information assurance. The aim of this text is to provide the readers with the topics which are crucial and of utmost importance. While understanding the long-term perspectives of the topics, the book makes an effort in highlighting their impact as a modern tool for the growth of the discipline. It will serve as a valuable source of reference for those interested in this field.