Playbook: detect ID bridging in your own supply chain

Playbook: detect ID bridging in your own supply chain
Heard: an intermediary mislabeling device or user IDs can get your whole domain demoted by buyers.

— Compare the IDs in your outbound request to what SSPs forward downstream
— Flag any partner enriching IDs you didn't pass
— Check IP and device fields aren't being rewritten mid-path
— Audit any reseller that shows suspiciously uniform match rates
— Cut the path the moment IDs don't reconcile end to end

Impact: ID bridging in your chain gets you blocked for someone else's trick. sourced