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Third‑Party Tracking

Tracking

Tracking Third‑Party Cookies Tracking Pixel Real‑Time Bidding (RTB)

Cross-site/app tracking by external entities using shared identifiers and scripts.

Definition

Third-party tracking uses embedded scripts, pixels, SDKs, and third-party cookies/IDs to observe user behavior across multiple first-party contexts.

In plain English Cross-site/app tracking by external entities using shared identifiers and scripts.

Why this matters

Why it matters: It increases data sharing, profiling, and breach surface across an ecosystem of partners.

Example

Example: Ad tech SDK sends device identifiers and events to multiple third parties for targeting.