Cloud security, by definition, is a new term that evolved from a "cloud computing". "Cloud Security Cloud Security" through the mesh of a large number of customer-side software on the network behavior anomaly detection, access to the Internet, Trojans, malicious programs, pushed to the Server side for automatic analysis and processing, and then viruses and Trojan solutions distributed to each client [2]. Cloud computing is Internet ‐ based computing, whereby shared resources, software and information are provided to computers and other devices on‐demand, like the electricity grid.