The protection of confidentiality, integrity and availability of data, while ensuring policy implementation and organizational productivity is the primary focus of information security. An evaluation of the assets, threats, vulnerabilities, impacts and effectiveness of control measures is crucial for developing an effective risk management plan. The threats to information security can be in the form of software attacks, intellectual property thefts, sabotage and information extortion. Some common examples of software attacks are viruses, Trojan horses, phishing attacks and worms. This book is a compilation of chapters that discuss the most vital concepts and emerging trends in the field of information security. The various advancements in this field are glanced at and their applications as well as ramifications are looked at in detail. For all readers who are interested in information security, the case studies included in this book will serve as an excellent guide to develop a comprehensive understanding.