Welcome to the Dark Side: Analyzing the Revenue Flows of Fraud in the Online Ad Ecosystem

• URL: http://arxiv.org/abs/2306.08418v3
• Date: Wed, 09 Jul 2025 08:57:17 GMT
• Title: Welcome to the Dark Side: Analyzing the Revenue Flows of Fraud in the Online Ad Ecosystem
• Authors: Emmanouil Papadogiannakis, Nicolas Kourtellis, Panagiotis Papadopoulos, Evangelos P. Markatos,
• Abstract summary: Bad actors have found ways to circumvent restrictions, and generate substantial revenue that can support websites with objectionable or even illegal content.<n>We show how shady actors take advantage of gaps to absorb ad revenues while putting the brand safety of advertisers in danger.<n>We publish a Web monitoring service that enhances the transparency of supply chains and business relationships between publishers and ad networks.
• Score: 2.1456348289599134
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The online advertising market has recently reached the 500 billion dollar mark. To accommodate the need to match a user with the highest bidder at a fraction of a second, it has moved towards a complex, automated and often opaque model that involves numerous agents and intermediaries. Stimulated by the lack of transparency, but also the enormous potential profits, bad actors have found ways to circumvent restrictions, and generate substantial revenue that can support websites with objectionable or even illegal content. In this work, we evaluate transparency Web standards and show how shady actors take advantage of gaps to absorb ad revenues while putting the brand safety of advertisers in danger. We collect and study a large corpus of thousands of websites and show how ad transparency standards can be abused by bad actors to obscure ad revenue flows. We show how identifier pooling can redirect ad revenues from reputable domains to notorious domains serving objectionable content, and that the phenomenon is underestimated by previous studies by a factor of 15. Finally, we publish a Web monitoring service that enhances the transparency of supply chains and business relationships between publishers and ad networks.

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