Cloud computing has grabbed the spotlight within some time span. The cloud computing trend is increasing rapidly so to implement it into an organization we need to observe the threats of cloud computing. At an unusual pace it has turned the face of government and business and has created some new challenges. However developers have created new vulnerabilities, including security issues whose full impressions are still rising. This paper presents an overview and study of cloud computing, with several security threats, security issues, currently used cloud technologies and security solutions [3].