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PolicyJun 26, 2026

UODO (Poland) - DKN.5131.7.2022

Poland's UODO reprimands controller and processors, fines sub-processor €2,415 for GDPR violations.

Poland's Data Protection Authority (UODO) has issued a reprimand to a data controller for violating GDPR principles of integrity, confidentiality, and accountability. The controller also failed to implement adequate technical and organizational measures and properly vet subprocessors. Additionally, two processors and a sub-processor were reprimanded for failing to implement appropriate security measures. The sub-processor was largely responsible for the data breach, having used an app to process personal data without authorization and failing to ensure continued access controls after employment termination. The sub-processor was fined €2,415.

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The lesson from this incident

Full lesson

A data breach occurred because a sub-processor used an unauthorized application to process personal data and failed to revoke access controls after an employee's termination — two fundamental security failures. The root data controller compounded the risk by not properly vetting or monitoring its subprocessors, violating GDPR principles of integrity, confidentiality, and accountability. This case illustrates how third-party and supply chain relationships can become the weakest link in a data protection chain. Organizations cannot outsource accountability: they remain legally responsible for ensuring that every processor and sub-processor in the chain applies adequate technical and organizational safeguards.

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