Abstract: The cloud computing concept has been evolving for more than 40 years. Cloud computing is an on demand computing in which dynamically scalable and often virtualized resources are provided as a service over the Internet. The cloud computing services are delivered through software as service (SaaS), platform as service (PaaS) and Infrastructure as service (IaaS). Cloud Computing moves the application software and databases to the large data centers, where the management of the data and services are provided by cloud service providers. The common data security concerns are securing data in transit and at rest, access control and data separation. In this survey paper, we review the data in public cloud, identify and discuss the security risks associated with it and analyze its solution strategies.
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