European privacy regulators are paying more attention to how websites track people. Two recent cases show that old tracking methods, like using tracking pixels, can be risky. If users don't give consent, you can't track them, and failing to respect that can lead to serious consequences. They also show how server-side tracking can be a safer option.
Case: the Norwegian Data Protection Authority found that six websites, including a children's help service, an online pharmacy, and medical sites, sent sensitive personal data to third parties without permission.
They also:
Outcome: a fine of NOK 250,000 (approximately $24k)
A German court ruled that Google Tag Manager sends personal data (like IP addresses) to Google right away. Because of this, websites must get consent before loading GTM at all.
Outcome: the court did not fine the company but ordered it to obtain valid user consent for GTM or remove it entirely, highlighting that activating GTM without consent can lead to legal issues and enforcement actions.
As privacy laws tighten globally, relying on traditional browser-based tracking faces increasing challenges, from blocked scripts to unauthorized data leaks. Server-side tracking moves data collection from the user's device to your own servers, which gives you direct control over what information is captured and shared.
How server-side tracking helps comply with privacy laws and regulations:
Server-side tracking can support privacy compliance, but it doesn't remove the need for user consent. Under the ePrivacy Directive and related laws, any collection or storage of personal data requires explicit permission.
To stay compliant, you must still enable consent mode in server GTM, display a legally compliant cookie banner, and work with your legal team to ensure all requirements are met.
When implemented correctly, together with a proper consent mechanism, server-side tracking can help protect user privacy, support compliance with data protection laws, and maintain reliable analytics despite evolving privacy standards.
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