ADKEEN

Glossary

Ads.txt

A publisher-declared file identifying authorised sellers of its digital advertising inventory.

SSP & Ad SupplyPractitionerAlso called: Authorized Digital SellersSource: IAB Tech Lab

Definition

A publisher-declared file identifying authorised sellers of its digital advertising inventory.

Why it matters

Ads.txt exists specifically to stop domain spoofing — checking it before transacting verifies the seller is actually authorised by the publisher.

Related terms

Domain SpoofingA fraudulent practice in which an ad opportunity falsely represents itself as coming from a legitimate publisher or domain.Sellers.jsonA publicly available file, hosted by an SSP or exchange, listing the sellers and intermediaries authorised to transact on its platform.

Practitioner notes

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