New Research: 

How to Know If Your Instream Video Buy Is Really Instream Learn More

Undisclosed Resellers

Definition & Explanation Undisclosed resellers are unauthorized intermediaries selling ad inventory without publisher permission, often causing inflated CPMs and increased fraud exposure. Unlike authorized resellers, these entities operate outside the publisher’s knowledge, making the supply chain opaque and vulnerable to exploitation. The IAB’s ads.txt initiative was introduced specifically to combat this problem by allowing publishers … Continued

Ad Tech Glossary

A Ad Exchange: A digital marketplace where publishers list inventory and advertisers bid in real time. Ad Density: The ratio of ads to content on a webpage; high density often signals poor user experience or MFA risk. Ad Fraud: Any practice that manipulates ad delivery, views, or clicks for illegitimate gain (bots, spoofing, fake installs). … Continued