A cookie is a small information set that is used for several different purposes on the web and is sent to your web browser when certain websites or web applications are visited. The browser will then use this cookie to send it back to a web server. Usually, a cookie is used to identify the visitor and keep it logged in on the website or web application. This is how websites know that you are logged in when browsing them. Cookies help the website understand the behavior or browsing party and help browsers remember the certain state of the visitor and settings that may have been used on the website. This behavior is useful especially for HTTP protocol since it makes the browser remember the state of the visit even though HTTP is a stateless protocol. Cookies are usually used for session control (keeping you logged in on the website), personalization (settings considering the user’s environment), and tracking (analytics of any sort).
What types of cookies do we send?
How long do they persist on your browser?
What data do they track?