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RTB cookie syncing: what it means and how to review it
RTB cookie syncing is an adtech behavior where advertising or identity systems appear to share or match identifiers across domains. To review it, inspect the request and vendor evidence, the timing of the activity, and whether the behavior appears before or after a recorded consent choice. CertScore.ai automates this review by observing public website requests, vendor context, cookie or identifier-related telemetry, and supporting evidence. The result is a higher-signal business review cue, not a legal conclusion.
Run a free website behavior scan
Check observable tracking, cookies, consent, accessibility, and privacy risk signals.
What CertScore observes
CertScore.ai reviews observed request hosts, URL patterns, vendor categories, redirect-like behavior, and known advertising or identity endpoints.
The scan does not claim to know every downstream use of an identifier. It surfaces evidence that a team should review with its advertising, consent, and vendor-management owners.
Why it matters
Identifier-sharing behavior can be more sensitive than a simple cookie inventory because it may indicate cross-domain advertising or measurement flows.
Review the evidence for request timing, vendor purpose, user-consent state, and whether the behavior is expected for the scanned surface.
Run a free website behavior scan
Check observable tracking, cookies, consent, accessibility, and privacy risk signals.