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Advancement in the field of information technology has enabled us to optimize the use of physical infrastructure with the help of virtualization, most of which is only used in specific applications like vitalizing a local area network on switch or vitalizing a compute resource to run more than one operating system on a desktop.The benefits of same has not been completely implemented and utilized in education and research environments where we require a large amount of IT resources. Cloud computing has emerged as one step further solution to deploy all virtualized IT resources as per need on self-service basis as a rental method for the users. Different cloud deployment methods have emerged according to the need of users, institutions and communities. This paper describes the framework of design and implementing a simple private cloud for education and research based on chip level virtualization with hypervisor to establish a simple model of Infrastructure as a service in cloud computing. General TermsPrivate cloud framework

Today's world is a new digital world where most of the things have moved online. As the digital world is enhancing, advancing, and evolving every day, various new and unique innovations and developments are rolling out in the IT industry. These innovations and developments are helping humans overcome existing problems, improve processes, and enhance the user experience by providing specific and personalized solutions to users. User needs are the main reason behind all this digital change and innovation. One such important innovation which has changed the digital world's face is known as cloud computing. Cloud computing is an internet-based service, which enables on-demand network access to share a collection of all configurable computational resources (such as servers, repositories, networks, applications, resources). As the amount of data is increasing day by day, the security of users' data has become a major and crucial concern to provide protected communication between users and the cloud service provider.

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.