Third-party cookie

Third-party Cookies are not created by the website being visited, but other domains third-party servers. Let’s imagine a visitor is browsing which has a YouTube video on one of its pages. In this case, YouTube will set a cookie which is then saved on a visitor’s computer. This cookie is classified as a third-party cookie, because it’s created by a different domain than

Third-party cookies are the fuel of online advertising. As advertisers add their tags to a page they can display ads, as well as track users and devices across the different sites they visit.

On the other hand, those cookies cause some serious concerns regarding privacy compliance. From the user’s perspective it’s hard to understand who is doing what with their data.

Find more details on third-party cookies on Piwik PRO blog: