Technical
Third-Party Cookie
A cookie set by a domain other than the website you are visiting — commonly used for cross-site tracking and advertising.
A third-party cookie is a cookie set by a domain different from the website the user is currently visiting. These cookies are typically used for cross-site tracking, advertising, and social media integration.
How They Work
When a website embeds content from another domain (e.g. an ad, a social media button, an analytics script), that third-party domain can set cookies on the user's browser. These cookies allow the third party to track the user across different websites.
Privacy Concerns
- Enable cross-site tracking without the user's knowledge
- Used to build advertising profiles across the web
- Increasingly blocked by browsers (Safari, Firefox block by default; Chrome phasing out)
Regulatory Status
Third-party cookies almost always require consent under the ePrivacy Directive because they are not strictly necessary for the service the user requested.