Cookies are basically small files which are stored on a user's computer. When a user surfs the internet, the websites visited by him or her collects and records the usage information about the computer such as IP address or the browser which the user is accessing and tracks the activities. The Cookies are designed to hold small amount of data and can be accessed either by the web server or the client computer. This allows the server to deliver a page according to the user and is able to carry information from one visit to the website to the next.