Persistent Cookies <p>These stay on your browser after it’s closed and are often used so you don’t have to re-enter information every time you visit a site. For example, if you abandon a shopping cart and visit it again a few weeks later to find the items are still in your checkout – this will be because of persistent cookies.</p> First-Party Cookies <p>First-party cookies are set by the website you visit. They may be used to track preferences and even store personal information within a site.</p> Authentication Cookies <p>These are used by web servers to check whether or not you are logged in to serve you with private information related to your authentication.</p> Third-Party Cookies <p>Many sites use third-party cookies which collect data and send information to sites that do not have a direct relationship with the website you are visiting.</p> <p>For example, Facebook uses cookies to track your web visits while you are logged in and serve up relevant and personalized ads.</p>  .