Session Cookies: are limited duration Cookies which are erased when you close the browser. Persistent Cookies: are files that stay in one of your browser's subfolders and may expire weeks, months or years after being set (unless you delete them manually) Value: This is the information in the cookie that the website uses to "remember" your previous visit. First Party Cookies: are issued by the one web site that you are visiting. This cookie can only be read by that one site and the information the cookie contains cannot be accessed or read by any web site. Third Party Cookies: are issued by a site other than the site you are currently browsing. So for example, if the site you are currently browsing contains banner ads at the top of the home page, the ad serving company could issue you a third party cookie in order to track your preferences and habits and serve you more and more relevant ads. Zombie Cookies: A zombie cookie is any cookie that is automatically recreated after a user has deleted it. This is accomplished by a script storing the content of the cookie in some other locations, such as the local storage available to Flash content, HTML5 storages and other client side mechanisms, and then recreating the cookie from backup stores when the cookie's absence is detected. Tracking Cookies: Tracking Cookies may be used to track internet users' web browsing habits. By looking at the log file, it is then possible to find out which pages the user has visited and in what sequence.