View source for Cookies - first party and third party

The difference between First-Party and Third-Party Cookies

'''First party cookies'''
First-party cookies either originate on or are sent by the website (the domain name) of the service currently being used. First-party cookies are commonly used to store information such as user preferences.

'''Third-party cookies'''
Third-party cookies come from other websites or web services that may be connected to the site you are currently viewing. Third-party cookies are frequently used to track webpage use for advertising or other marketing purposes. Advertising content served into a webpage from somewhere outside that website (such as ‘sponsored links’ columns or banner advertising networks) usually use third-party cookies. Third-party cookies can be either persistent or session cookies.

'''Fourth-party cookies'''
These are possible when a third party ad server delivers advertising using another party. A common situation is when a third party server is delivering advertising using formats such as Rich Media which are often streamed from another organisation. Cookies associated with the other organisation would be 'Fourth Party' cookies.  

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