Message given to a web browser by a web server. The message is then stored by the browser in a text file called cookie.txt. Each time the browser requests a page from the server, this message is sent back. A cookie's main objective is to identify users and personalise their visit by customising web pages for them, for example by welcoming them by name the next time they visit the same site. A site using cookies will usually invite you to provide personal information such as your name, email address and interests.