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GDPR starts to apply across the EU

Regulatory

GDPR starts to apply across the EU. The EU's data-protection law. It governs how personal data — including the cookie IDs and device IDs ad tech runs on — may be collected and used.

Announced: May 25, 2018

Last updated Sep 26, 2026 by the ATDb Editorial Team

Overview

GDPR starts to apply across the EU. The EU's data-protection law. It governs how personal data — including the cookie IDs and device IDs ad tech runs on — may be collected and used.