Glossary/Adtech & Programmatic/Domain Spoofing
Adtech & Programmatic
Domain Spoofing
Fraud where low-quality or fake inventory is misrepresented in bid requests as coming from a premium publisher's domain.
By Brandon Mina·CEO, BrandPilot AI·Updated November 2026
Appears in Lesson 7 of Programmatic 101
Short answer
Domain spoofing is a type of ad fraud in which low-quality or fake inventory is misrepresented in bid requests as coming from a premium publisher's domain. Buyers pay premium prices for impressions that never ran on the claimed site. Industry standards such as ads.txt, sellers.json, and the supply chain object help detect and prevent it.