<b>Your PMP deal ID is leaking to the open market</b>

<b>Your PMP deal ID is leaking to the open market</b>

Heard: a deal ID negotiated for one SSP sometimes propagates through resold paths into the open auction, where another buyer sees the same ID at a lower floor. The premium deal gets undercut by its own leaked identifier on a parallel path.

— Deal IDs aren't path-scoped by default
— Resellers can carry the ID where it shouldn't go

Impact: scope deal IDs to a single declared path and watch for the ID surfacing on exchanges it wasn't sold on. (rumor)