This book addressed one of the most overlooked practical, methodological, and moral problems of any nation, that of maintaining privacy and security in the healthcare sector. For example, the following questions need to be addressed in this domain. Who can access information in an electronic health record (EHR) and how can users see information in their record to ensure its correctness? How is it protected from loss, theft, and hacking? What should users do if they think their information is compromised? In this book, we discussed a detailed framework to maintain security and privacy in electronic healthcare records, and comparative case studies using various performance evaluation metrics, such as privacy preservation, scalability, and healthcare legislation.