Does the GDPR Ban Ad Fraud Detection?

Question

Before 2028-01-01, will a European Data Privacy Agency warn or fine a website operator under the GDPR for collecting personal data for ad fraud prevention?

This does not include a warning/fine for:

Collecting data for ad fraud plus some other purpose

Using US ad fraud providers (Schrems II)

Using cookies (ex: recent Microsoft Ruling) or other local storage

Violation of regulations newer than 2022-01-01

Resolves yes if a warning or fine is issued, no otherwise.

Context: https://www.jefftk.com/p/ad-fraud-detection-prediction-market

Manifold Markets · Answer

Probably not — Manifold Markets prediction market estimates a 28% chance (21 traders, as of Oct 17, 2026).