Cloud computing provides architecture for an internet dependent on-demand service where the users can access a shared pool of resources such storage, network, servers and applications distributed across the globe in a cost effective manner. Just like with every rising technology, as emanate the benefits, so arise the security threats and cloud computing is no exception. The various security concerns associated with cloud computing are limited control over the data, access control management, data privacy, data integrity, data location and availability, network security, data security, virtual machine security etc. This paper primarily focuses on the essential theory of secure cloud computing by the implementation of a personal cloud server. This paper gives a briefing about the security threats in the current cloud environment and how these risks can be mitigated by a model of a personal cloud server.