Cloud computing is a completely internet dependent technology where client data is stored and maintain in the data center of a cloud provider. Cloud computing is an architecture for providing computing service via the internet on demand and pay per use access to a pool of shared resources namely networks, storage, servers, services and applications, without physically acquiring them. So it saves managing cost and time for organizations. The security for Cloud Computing is emerging area for study and this paper provide security topic in terms of cloud computing based on analysis of Cloud Security treats and Technical Components of Cloud Computing.