# Definitions 4(5) — GDPR — provision context

> Focused context for a single provision (4(5)), curated from overview.legal on 2026-08-22. Canonical: https://overview.legal/laws/gdpr/art-4#par-5
> Verify against the official text (EUR-Lex / wetten.overheid.nl) before relying on it.

Part of **Definitions** (GDPR, full article: https://overview.legal/laws/gdpr/art-4).

## Provision text

### 4(5)

‘pseudonymisation’ means the processing of personal data in such a manner that the personal data can no longer be attributed to a specific data subject without the use of additional information, provided that such additional information is kept separately and is subject to technical and organisational measures to ensure that the personal data are not attributed to an identified or identifiable natural person;


## Topics on this provision

- **Identification** — https://overview.legal/topics/identificatie
  Methods and processes for identifying individuals
- **Anonymization** — https://overview.legal/topics/anonimisering
  Irreversible removal of identifying information from data
- **Personal Data** — https://overview.legal/topics/persoonsgegevens
  Information relating to identified or identifiable natural persons
- **Processing** — https://overview.legal/topics/verwerking
  Any operation performed on personal data

## Cited by (exact-provision citations)

- **NSS - 1 As 183/2023-62** (case-law) — https://overview.legal/posts/184683
- **Judgment of the General Court (Ninth Chamber) of 3 May 2018.#Republic of Malta v European Commission.#Access to documents — Regulation (EC) No 1049/2001 — Documents held by the Commission — Documents originating from a Member State — Documents exchanged pursuant to the control system for ensuring compliance with the rules of the common fisheries policy — Article 113 of Regulation (EC) No 1224/2009 — Public access following a request made by a non-governmental organisation — Action for annulment** (case-law) — https://overview.legal/posts/132343
- **Judgment of the Court (Third Chamber) of 2 March 2023.#Norra Stockholm Bygg AB v Per Nycander AB.#Request for a preliminary ruling from the Högsta domstolen.#Reference for a preliminary ruling – Protection of personal data – Regulation (EU) 2016/679 – Article 6(3) and (4) – Lawfulness of processing – Production of a document containing personal data in civil court proceedings – Article 23(1)(f) and (j) – Protection of judicial independence and judicial proceedings – Enforcement of civil law clai** (case-law) — https://overview.legal/posts/132293
- **Judgment of the Court (Grand Chamber), 8 April 2014.#European Commission v Hungary.#Failure of a Member State to fulfil obligations — Directive 95/46/EC — Protection of individuals with regard to the processing of personal data and the free movement of such data — Article 28(1) — National supervisory authorities — Independence — National legislation prematurely bringing to an end the term served by the supervisory authority — Creation of a new supervisory authority and appointment of another per** (case-law) — https://overview.legal/posts/132371
- **Hoge Raad - ECLI:NL:PHR:2023:935** (case-law) — https://overview.legal/posts/158435
- **Judgment of the Court (Grand Chamber) of 18 July 2017.#European Commission v Patrick Breyer.#Appeal — Access to documents of the institutions — Article 15(3) TFEU — Regulation (EC) No 1049/2001 — Scope — Application for access to written submissions filed by the Republic of Austria in the case in which judgment was given on 29 July 2010, Commission v Austria (C‑189/09, not published, EU:C:2010:455) — Documents in the possession of the European Commission — Protection of court proceedings.#Case C** (case-law) — https://overview.legal/posts/132347
- **Judgment of the Court (Fourth Chamber) of 7 March 2024.#IAB Europe v Gegevensbeschermingsautoriteit.#Request for a preliminary ruling from the Hof van beroep te Brussel.#Reference for a preliminary ruling – Protection of natural persons with regard to the processing of personal data – Regulation (EU) 2016/679 – Standard-setting sectoral organisation proposing to its members rules on the processing of users’ consent – Article 4(1) – Concept of ‘personal data’ – String of letters and characters ca** (case-law) — https://overview.legal/posts/132270
- **Judgment of the Court (Grand Chamber) of 5 December 2023.#Nacionalinis visuomenės sveikatos centras prie Sveikatos apsaugos ministerijos v Valstybinė duomenų apsaugos inspekcija.#Request for a preliminary ruling from the Vilniaus apygardos administracinis teismas.#Reference for a preliminary ruling – Protection of personal data – Regulation (EU) 2016/679 – Article 4(2) and (7) – Concepts of ‘processing’ and ‘controller’ – Development of a mobile IT application – Article 26 – Joint control – Arti** (case-law) — https://overview.legal/posts/132280
- **Judgment of the General Court (Ninth Chamber) of 3 May 2018.#Republic of Malta v European Commission.#Access to documents — Regulation (EC) No 1049/2001 — Documents held by the Commission — Documents originating from a Member State — Documents exchanged pursuant to the control system for ensuring compliance with the rules of the common fisheries policy — Article 113 of Regulation (EC) No 1224/2009 — Public access following a request made by a non-governmental organisation — Action for annulment** ¶117 (case-law, General Court) — https://overview.legal/posts/132343
- **Judgment of the Court (Grand Chamber), 8 April 2014.#European Commission v Hungary.#Failure of a Member State to fulfil obligations — Directive 95/46/EC — Protection of individuals with regard to the processing of personal data and the free movement of such data — Article 28(1) — National supervisory authorities — Independence — National legislation prematurely bringing to an end the term served by the supervisory authority — Creation of a new supervisory authority and appointment of another per** ¶8 (case-law, Court of Justice of the European Union) — https://overview.legal/posts/132371
- **Judgment of the General Court (Ninth Chamber) of 3 May 2018.#Republic of Malta v European Commission.#Access to documents — Regulation (EC) No 1049/2001 — Documents held by the Commission — Documents originating from a Member State — Documents exchanged pursuant to the control system for ensuring compliance with the rules of the common fisheries policy — Article 113 of Regulation (EC) No 1224/2009 — Public access following a request made by a non-governmental organisation — Action for annulment** ¶144 (case-law, General Court) — https://overview.legal/posts/132343
- **Judgment of the General Court (Ninth Chamber) of 3 May 2018.#Republic of Malta v European Commission.#Access to documents — Regulation (EC) No 1049/2001 — Documents held by the Commission — Documents originating from a Member State — Documents exchanged pursuant to the control system for ensuring compliance with the rules of the common fisheries policy — Article 113 of Regulation (EC) No 1224/2009 — Public access following a request made by a non-governmental organisation — Action for annulment** ¶40 (case-law, General Court) — https://overview.legal/posts/132343

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Generated by overview.legal · https://overview.legal/laws/gdpr/art-4#par-5 · 2026-08-22