Guidance · EDPB NL LLM context A cited markdown file you can paste into your AI assistant (ChatGPT, Claude, a RAG or project knowledge base) to ground it in this document. Contains: this document’s text, its sections with their topics, and the full text of every law provision it applies. Everything links back to its source on overview.legal — legal information, not advice.
Guidance
Full text
Pseudonymisation may be employed by controllers and processors as one of several technical and organisational measures in order to implement data-protection principles according to Art. 25(1) GDPR, in particular data minimisation and confidentiality. It may also contribute to safeguarding the lawfulness, fairness, purpose limitation and accuracy principles. The following paragraphs detail the application of pseudonymisation for those objectives, both in circumstances where pseudonymised data is processed internally, and where it is transmitted to other parties. 2.4.1.1 Data minimisation, confidentiality, and purpose limitation in internal processing
How it connects
References
Related across sources
C-77/21 Digi Távközlési és Szolgáltató Kft. v Nemzeti Adatvédelmi és Információszabadság Hatóság In this preliminary ruling, the CJEU interpreted Articles 5(1)(b) and 5(1)(e) GDPR in proceedings between Digi Távközlési és Szolgáltató Kft. and the Hungarian National Authority… First Chamber Oct 20, 2022 Retention Period Storage Limitation Personal Data
C-268/21 Norra Stockholm Bygg AB v Per Nycander AB In Case C-268/21, the Court of Justice of the European Union (Third Chamber) ruled on a preliminary reference from the Swedish Supreme Court in proceedings between Norra Stockholm… Third Chamber Mar 2, 2023 Retention Period Anonymization Personal Data
C-175/20 SIA 'SS' v Valsts ieņēmumu dienests In Case C-175/20, the Court of Justice of the EU interpreted GDPR Articles 5 and 6 in response to a preliminary ruling from the Latvian Regional Administrative Court concerning a… Fifth Chamber Feb 24, 2022 Retention Period Personal Data Legitimate Interest
C-446/21 Maximilian Schrems v Meta Platforms Ireland Limited In a preliminary ruling arising from proceedings between Maximilian Schrems and Meta Platforms Ireland Limited, the Court of Justice of the European Union interpreted GDPR… Fourth Chamber Oct 4, 2024 Retention Period Personal Data Marketing
C-413/23 European Data Protection Supervisor v Single Resolution Board The European Data Protection Supervisor (EDPS) appealed a General Court judgment that annulled its decision finding the Single Resolution Board (SRB) had failed to fulfil its… First Chamber Sep 4, 2025 Pseudonymization Anonymization Personal Data
C-741/21 GP v juris GmbH In Case C-741/21, the Court of Justice of the European Union (Third Chamber) addressed a preliminary reference from the Landgericht Saarbrücken in proceedings between data subject… Third Chamber Apr 11, 2024 Liability Personal Data Integrity and Confidentiality Principle