Cloud computing has emerged as one of the enabling technologies that allows the world of Information Technology to use computer resources effectively and more efficiently. There is a growing trend of using cloud environments for storage and data processing needs. This book proposes a different approach for protecting data leakages in the cloud. In this book, various layers of security for data have been proposed which will provide highest security to data in cloud. These layers will consist of user authentication with one time password, user access rights, encryption of users data and in the last layer hacker cannot access more information than the part which is stored in the cloud because system will automatically differentiates the file breaks and disjoint stores on different locations.