témoin de tierce partie

CONT: Usually, websites let advertising networks place ads within their pages. If you click on an ad, another cookie is sent to your browser by the advertiser – that's the third-party cookie. While this type of cookie doesn't pose an internet security threat, there's a privacy issue involved. With every new site you visit that's related to that particular advertiser, the third-party cookie can be traced. This way, the advertiser learns about your online habits and can build up a consumer profile of you ... Next step: it shows you specific ads matching your interests.