Data Integrity (Prevention and Detection) in Cloud Environment

Cloud computing is a collective, optimized usage of IT resources which can be accessed from anywhere and performs the task of providing IT resources and services through various platforms as a service for users. Cloud users use different services of Cloud service providers and eventually end up keeping their data (in various forms) in cloud multi tenant environment. Multi-tenancy in cloud environment makes data vulnerable though with times different forms of threats and corresponding securities are already implemented in cloud environment. Although many of these services provide key functionality such as uploading and retrieving files by a precise user, more on going to the side of advanced services it offer features such as shared folders, real-time collaboration, and minimization of data transfers or unlimited storage space. As data is placed publically it require to search ways to protect the data from unauthorized access, files are uploaded publically and need to retrieve them securely with token ensuring possession proofs. In this paper we have presented a case of multilevel security application for ensuring data integrity (prevention and detection) in cloud environment