Cyber security is related to information technology security, which focuses on protecting networks, computers programs and data from unauthorized access. Defense and military, government, financial institutions and corporation etc. collect and store confidential information on computers and transfer that data across networks. In order to protect this data and information from cyber attack cyber security becomes necessary. Increasing threats such computer intrusion (hacking), virus deployment and denial of services are increasing the demand for cyber security solutions and services. The governments of various countries such as U.S., Canada, Germany and China etc. are increasing their investment in cyber security due to expansion in computer interconnectivity and dramatic in computing power of government network.