Nowadays, Cloud computing provides extended architecture which can be accessed through internet and also it reduces the setup of computing infrastructure for the IT based solutions and services. Cloud computing is a sharing of configurable resources like Application-as a service, Platform as a services and infrastructure as a services. Different kind of cloud services on the Internet exposed by application programming interfaces. As the APIs are accessible across the Internet, malicious attackers can compromise the confidentiality and integrity. In this paper, one of the top security threats of cloud computing shared by Cloud Security Alliance (CSA) has been analyzed.