Cloud Computing is an emerging technology with lot of job opportunities and as well as research oriented. Presently many small and large scale businesses were using Cloud services to meet their requirements. Even cloud services are beneficiary there are little drawbacks to consider. The one of the main issue in cloud Computing is security. The problem in normal services is needed to consider, but the sensitive data stored in cloud is how much secured is the big question? In this paper, we analyzed different issues and their solutions regarding the security issues in cloud computing. In this paper, we mainly focus on the sensitive data storage security. The better solution for sensitive data can be availed by using security as a service model in cloud. In Security-as-a-Service demonstrate the emphasis is on security given as cloud administrations; i.e. security conveyed through the cloud rather than on-commence security arrangements. The paper gives the thorough examination of security-as a- Service conveyance demonstrate from different points of view.