Cloud computing has been unreal and unimaginable because it's the fore coming model of IT industries. In distinction to the solutions provided in the ancient period, cloud has brought about a new perspective to the problem. By reducing infrastructural cost and improving services through buying services. Cloud computing has made the impossible possible. Hence greater challenges wait, when talking about cloud security. Through cloud computing techniques and knowledge we have been able to solve 'big data' problems. Through online cloud services such as 'pay as you go' models. Now third parties can take advantage of these cloud services such as SLA etc to reach greater optimization and profit. The security play's a major role in cloud because of its open system architecture, this paper proposed an agent based model to detect data leakage over cloud. © 2017 IEEE.