== HTTPOnly * Disallows access to cookie in most modern browsers ** Even by the website that set the cookie in the first place * HTTPOnly Cookies are still accessible through AJAX ** This is accomplished using the XmlHttpRequest object ** Cookie data can still be read from the headers * Public web sites that support multiple browsers * Use a client-side script to determine the browser version for a visitor * The website can restrict sensitive information to visitors using browsers that mitigate cross site scripting attacks for cookies * Visitors with browsers that do not support HTTPOnly cookies can be given limited information or functionality along with a request to upgrade their software