What is a cookie?
Most websites you visit is using cookies to enhance you're user experience by "remembering" you, either for individual visit of the website ( 'session cookie' ) or each time you visit the same website ( 'persistent cookie' ).
A cookie is a simple text file that is stored on your computer or mobile phone on the webpages server and only that server will have access to this information. Each cookie is unique to your browser . It will contain some anonymous information such as usernames and passwords, your preferences or what you put in your shopping cart at your last visit.