What is a cookie?
Cookies are small data files that your browser places on your computer or device. Cookies help your browser navigate a website and the cookies themselves cannot collect any information stored on your computer or your files. When a server uses a web browser to read cookies they can help a website deliver a more user-friendly service. To protect your privacy, your browser only gives a website access to the cookies it has already sent to you.
How are third party cookies used?
How do I reject and delete cookies?