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Cookie consent is not a checkbox — it is a legal obligation under GDPR Article 7, the ePrivacy Directive, and the national laws of EU member states. Getting it wrong exposes your business to regulatory action, and the enforcement landscape across Europe — including Greece — has become significantly more active. Beyond compliance, how you implement consent directly affects your analytics data quality and your advertising attribution. As an iubenda Gold Partner, Hellenic Technologies has deep expertise in consent management platform implementation and the technical integration of CMPs with Google Consent Mode v2. We have implemented compliant consent stacks for clients across e-commerce, finance, healthcare, and media verticals. CMP platforms we implement:
  • iubenda — Full iubenda implementation including cookie policy generation, consent banner configuration, preference centre, and GTM integration. As an iubenda Gold Partner, we access the technical resources to implement iubenda correctly, including the automatic cookie blocking and consent signal forwarding that most DIY implementations miss.
  • Cookiebot — Cookiebot CMP deployment with automatic cookie scanning, category classification, and Consent Mode v2 signal output via GTM.
  • OneTrust — Enterprise OneTrust implementations for clients with complex consent requirements across multiple domains, jurisdictions, or product lines.
Consent Mode v2 integration: Google Consent Mode v2 allows GA4 and Google Ads tags to operate in a cookieless, privacy-safe mode when users decline consent, using modelled data to fill measurement gaps. Implementing it correctly requires the consent signal to fire before any other tags on the page — a sequencing requirement that most GTM configurations get wrong. We configure Consent Mode v2 using the GTM Consent Overview and the CMP’s native integration layer, ensuring that analytics_storage, ad_storage, ad_user_data, and ad_personalization signals are set correctly based on the user’s actual consent choices. What GDPR-compliant consent looks like:
  • Consent is freely given, specific, informed, and unambiguous (Article 7)
  • No pre-ticked boxes or consent bundled with terms acceptance
  • Granular category control — analytics and advertising consent are separate
  • Withdrawal is as easy as granting — the preference centre is accessible from every page
  • Consent records are stored and auditable
  • Tags fire only after the appropriate consent signal has been received