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RAEKFirstPartyData

Third-Party Cookie

A third-party cookie is set by a domain other than the one a user is visiting, typically by ad and tracking services embedded in a page. It enabled cross-site tracking and targeting, and it is being restricted or blocked by major browsers over privacy concerns.

Third-party cookies let companies follow users across unrelated sites to build behavioral profiles for advertising. That cross-site tracking is exactly what privacy efforts target.

Safari and Firefox block them by default, and the broader industry is shifting toward first-party data, contextual targeting, and privacy-preserving alternatives.

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