Supreme Administrative Court Upholds €40M GDPR Fine: Key Compliance Lessons for Businesses

March 17, 2026, Jesper Thornberg

The Supreme Administrative Court has confirmed a monumental €40,000,000 fine against an advertising company for severe and multiple breaches of the General Data Protection Regulation (GDPR). This significant ruling underscores the critical importance of robust data protection frameworks and serves as a stark warning regarding the financial penalties for non-compliance. Companies operating in online advertising and those handling personal data must take note of this case to mitigate their legal risks and ensure regulatory compliance.

The Landmark Ruling: What Happened?

According to the sources below, the advertising company faced the substantial penalty for a series of egregious GDPR violations. These included:

  • Lack of Consent for Cookies: Placing cookies for personalized advertisements without obtaining explicit user consent.
  • Inadequate Data Processing Information: Failing to properly inform users about the purposes for which their data was being processed.
  • Non-Compliance with Data Subject Rights: Disregarding requests from individuals to access or erase their personal data.
  • Absence of Joint Controllers’ Agreement: Failing to establish a legally required agreement between joint data controllers.

These violations highlight fundamental failures in data governance and demonstrate a disregard for core GDPR principles designed to protect individual privacy rights.

Why This Matters: Implications for Compliance, Risk, and Governance Teams

This case sends a clear message to compliance, risk, and governance teams across all sectors, particularly within online advertising and data-rich industries. The €40 million fine is not merely a number; it represents the severe financial consequences of failing to adhere to data protection laws.

Enhanced Scrutiny on Online Advertising and Data Collection

The focus on cookie consent and personalized advertising signals increased regulatory scrutiny on how companies collect and use data for marketing purposes. Businesses must review their cookie policies, consent mechanisms, and transparency practices to ensure full compliance with GDPR requirements.

Upholding Data Subject Rights

The court’s emphasis on data subject access and erasure requests reinforces the imperative for companies to have efficient and compliant processes for handling such requests. Failure to respond adequately can lead to significant regulatory action and reputational damage.

The Importance of Data Governance and Joint Controller Agreements

The absence of a joint controllers’ agreement was a critical factor in the ruling. This underscores the necessity for companies collaborating on data processing to clearly define their roles, responsibilities, and liabilities in a legally binding agreement to avoid compliance gaps and shared legal risk.

What Does This Mean for Companies?

Companies must proactively assess and strengthen their data protection frameworks. This includes:

  • Implementing robust consent management platforms.
  • Ensuring transparent and easily understandable privacy policies.
  • Establishing efficient procedures for handling data subject rights requests.
  • Formalizing joint controller agreements where applicable.
  • Regularly training staff on GDPR compliance.

Proactive compliance is not just about avoiding fines; it’s about building trust with customers and safeguarding your company’s reputation.

Sources:

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