Cloud computing has taken a centre stage in the time of business development. Working from different places accessing same shared resources and reverting back at a common store has never been so easy. It has benefitted not only in resource utilization but has also helped in the globalization to a larger extent. In the era of compaction, it’s not less than a magic wand to use the desired wishes anytime, anywhere! But along with that it has also poised some serious threats which could spread through one network and may harm many interrelated resources and challenge security measures. This paper provides an analysis of cloud computing, cloud data storage security, the security risks involved and software security pertaining to the cloud. The paper also indicates about the measures that could add into the trust factor regarding cloud computing. It mentions about how some of the important security services provides authentication and authorization. Security measures along with these features are supposed to provide data integrity and confidentiality under technological and process related aspects.