The basic concept, defines about the new technological trends. The blooming technologies trends is cloud computing, A summary of Cloud Computing and provides a good foundation for understanding. And it will be change the way you use your computer and the internet. Cloud computing portends a major change in how we store information and run applications. Instead of running programs and data on an individual desktop computer, everything is hosted in the cloud. A cloud service provider offers the services for the data request in a remote server. Virtualization aspect of cloud computing in Social network felicitates better utilization of resources. The industry needs to address the foremost security risk in the underlying technology. The cloud computing environment in Social networking aggravated with various security problems. This paper addresses challenges in securing data in cloud for Social networking.