Cloud Computing (CC) is accomplished on the top of Gartner's list of the ten most disruptive technologies of the next years. It has been measured as a significant step towards achieving the long-held dream of envisioning computing as a utility. It provides a great chance to supply storage, processing, and visualization resources for sensing-based healthcare data also. Flexibility, scalability, computing and application resources, optimal utilization of infrastructure and reduced costs are the major cloud-based services. CC comes with abundant possibilities and challenges concurrently of which security / threats is most well-thought out vital barrier for cloud computing path to success. When putting and transmitting data using public networks exposed to the world, cyber attacks in any form are anticipated in CC. Hence, cloud service users need to understand the risk of data breaches and adoption of service delivery model along with cloud deployment model in the cloud environment. This paper covers the roadmap on this machinery in detail so that “robust security application models” can be created / deployed easily with possible uncovered breaches.