In a world that relies increasingly on electronic information, data security is more important than ever. Many of the functions of the users business and personal life now rely on computers, mobile devices, and the Internet - and there's a lot of data out there to protect. As large amount of data is transmitted over the network, it is preliminary to secure all types of data before sending them. This is achieved through security controls. Protecting the information transmitted over the network is a difficult task and the data security issues become increasingly important.