# Communication of a personal data breach to the data subject 34(1) — GDPR — provision context

> Focused context for a single provision (34(1)), curated from overview.legal on 2026-08-22. Canonical: https://overview.legal/laws/gdpr/art-34#par-1
> Verify against the official text (EUR-Lex / wetten.overheid.nl) before relying on it.

Part of **Communication of a personal data breach to the data subject** (GDPR, full article: https://overview.legal/laws/gdpr/art-34).

## Provision text

### 34(1)

When the personal data breach is likely to result in a high risk to the rights and freedoms of natural persons, the controller shall communicate the personal data breach to the data subject without undue delay.


## Topics on this provision

- **Data Breaches** — https://overview.legal/topics/datalekken
  Security incidents involving unauthorized access to personal data
- **Notification Obligation** — https://overview.legal/topics/meldplicht
  Duty to report data breaches to authorities and affected individuals
- **Personal Data** — https://overview.legal/topics/persoonsgegevens
  Information relating to identified or identifiable natural persons
- **Controllers** — https://overview.legal/topics/controllers
  Entities that determine purposes and means of processing

## Cited by (exact-provision citations)

- **Judgment of the Court (Fifth Chamber) of 10 March 2016.#Safe Interenvios, SA v Liberbank, SA and Others.#Request for a preliminary ruling from the Audiencia Provincial de Barcelona.#Reference for a preliminary ruling — Prevention of the use of the financial system for the purpose of money laundering and terrorist financing — Directive 2005/60/EC — Customer due diligence measures — Directive 2007/64/EC — Payment services in the internal market.#Case C-235/14.** (case-law) — https://overview.legal/posts/132356
- **Judgment of the General Court (Seventh Chamber, Extended Composition) of 19 November 2025.#Amazon EU Sàrl, venant aux droits de Amazon Services Europe Sàrl v European Commission.#Digital services – Regulation (EU) 2022/2065 – Designation as a very large online platform – Plea of illegality – Admissibility – Article 33(1) and (4) of Regulation 2022/2065 – Right to respect for private and family life – Freedom to conduct a business – Right to property – Equal treatment – Freedom of expression – Da** (case-law) — https://overview.legal/posts/132131
- **Judgment of the Court (First Chamber) of 26 September 2024.#TR v Land Hessen.#Request for a preliminary ruling from the Verwaltungsgericht Wiesbaden.#Reference for a preliminary ruling – Protection of natural persons with regard to the processing of personal data – Regulation (EU) 2016/679 – Article 57(1)(a) and (f) – Tasks of the supervisory authority – Article 58(2) – Corrective powers – Administrative fine – Discretion of the supervisory authority – Limits.#Case C-768/21.** (case-law) — https://overview.legal/posts/132245
- **BGH awards non-material GDPR damages for erroneous disclosure of applicant salary data** (case-law) — https://overview.legal/posts/184554
- **Judgment of the General Court (Seventh Chamber, Extended Composition) of 3 September 2025.#Zalando SE v European Commission.#Digital services – Regulation (EU) 2022/2065 – Designation of a very large online platform – Plea of illegality – Article 33(1) and (4) of Regulation 2022/2065 – Legal certainty – Equal treatment – Proportionality – Obligation to state reasons.#Case T-348/23.** (case-law) — https://overview.legal/posts/132138
- **Judgment of the Court (Fifth Chamber) of 10 March 2016.#Safe Interenvios, SA v Liberbank, SA and Others.#Request for a preliminary ruling from the Audiencia Provincial de Barcelona.#Reference for a preliminary ruling — Prevention of the use of the financial system for the purpose of money laundering and terrorist financing — Directive 2005/60/EC — Customer due diligence measures — Directive 2007/64/EC — Payment services in the internal market.#Case C-235/14.** ¶24 (case-law, Court of Justice of the European Union) — https://overview.legal/posts/132356
- **Judgment of the General Court (Seventh Chamber, Extended Composition) of 19 November 2025.#Amazon EU Sàrl, venant aux droits de Amazon Services Europe Sàrl v European Commission.#Digital services – Regulation (EU) 2022/2065 – Designation as a very large online platform – Plea of illegality – Admissibility – Article 33(1) and (4) of Regulation 2022/2065 – Right to respect for private and family life – Freedom to conduct a business – Right to property – Equal treatment – Freedom of expression – Da** ¶147 (case-law, General Court) — https://overview.legal/posts/132131
- **Judgment of the General Court (Seventh Chamber, Extended Composition) of 19 November 2025.#Amazon EU Sàrl, venant aux droits de Amazon Services Europe Sàrl v European Commission.#Digital services – Regulation (EU) 2022/2065 – Designation as a very large online platform – Plea of illegality – Admissibility – Article 33(1) and (4) of Regulation 2022/2065 – Right to respect for private and family life – Freedom to conduct a business – Right to property – Equal treatment – Freedom of expression – Da** ¶141 (case-law, General Court) — https://overview.legal/posts/132131
- **Judgment of the General Court (Seventh Chamber, Extended Composition) of 3 September 2025.#Zalando SE v European Commission.#Digital services – Regulation (EU) 2022/2065 – Designation of a very large online platform – Plea of illegality – Article 33(1) and (4) of Regulation 2022/2065 – Legal certainty – Equal treatment – Proportionality – Obligation to state reasons.#Case T-348/23.** ¶133 (case-law, General Court) — https://overview.legal/posts/132138
- **Judgment of the General Court (Seventh Chamber, Extended Composition) of 3 September 2025.#Zalando SE v European Commission.#Digital services – Regulation (EU) 2022/2065 – Designation of a very large online platform – Plea of illegality – Article 33(1) and (4) of Regulation 2022/2065 – Legal certainty – Equal treatment – Proportionality – Obligation to state reasons.#Case T-348/23.** ¶134 (case-law, General Court) — https://overview.legal/posts/132138
- **Judgment of the General Court (Seventh Chamber, Extended Composition) of 3 September 2025.#Zalando SE v European Commission.#Digital services – Regulation (EU) 2022/2065 – Designation of a very large online platform – Plea of illegality – Article 33(1) and (4) of Regulation 2022/2065 – Legal certainty – Equal treatment – Proportionality – Obligation to state reasons.#Case T-348/23.** ¶132 (case-law, General Court) — https://overview.legal/posts/132138
- **Judgment of the General Court (Seventh Chamber, Extended Composition) of 19 November 2025.#Amazon EU Sàrl, venant aux droits de Amazon Services Europe Sàrl v European Commission.#Digital services – Regulation (EU) 2022/2065 – Designation as a very large online platform – Plea of illegality – Admissibility – Article 33(1) and (4) of Regulation 2022/2065 – Right to respect for private and family life – Freedom to conduct a business – Right to property – Equal treatment – Freedom of expression – Da** ¶157 (case-law, General Court) — https://overview.legal/posts/132131

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Generated by overview.legal · https://overview.legal/laws/gdpr/art-34#par-1 · 2026-08-22