---
title: "EDPB 01/2021: Guidelines 01/2021 on examples regarding personal data breach notification"
canonical: "https://dposchool.com/gdpr/guidance/edpb-01-2021"
source: "https://www.edpb.europa.eu/documents/guideline/guidelines-012021-on-examples-regarding-personal-data-breach-notification_en"
source_note: "Only the document as published by the EDPB is authoritative."
text_as_of: "2026-10-28"
last_reviewed: "2026-10-29"
language: "en"
publisher: "DPO School"
---

EDPB guidelines

# Guidelines 01/2021 on examples regarding personal data breach notification

[Reviewed by Sergio Maldonado Elvira on 29 October 2026](https://dposchool.com/gdpr/about#review)

- **Reference:** EDPB 01/2021
- **Issued by:** EDPB
- **Status:** Final
- **First published:** 19 January 2021
- **Final version:** 3 January 2022
- **Provisions:** [Article 33](https://dposchool.com/gdpr/article/33), [Article 34](https://dposchool.com/gdpr/article/34)

"First published" is the date the first version was published for consultation (start of the EDPB feedback period), or the publication date where there was no consultation; the plenary adoption is usually a day or a few days earlier.

## Note (not the official text)

Final date is the EDPB publication date of version 2.0.

## Official source

- [EDPB 01/2021 on the EDPB website](https://www.edpb.europa.eu/documents/guideline/guidelines-012021-on-examples-regarding-personal-data-breach-notification_en)

Checked against the official source on 28 October 2026.

Only the document as published by the EDPB is authoritative. This is reference material, not legal advice.

## Navigation

[GDPR Navigator](https://dposchool.com/gdpr) / [EDPB guidance](https://dposchool.com/gdpr/guidance) / EDPB 01/2021

[All EDPB guidance](https://dposchool.com/gdpr/guidance)

Studying the GDPR? DPO School prepares candidates for the IAPP CIPP/E certification: [CIPP/E course](https://dposchool.com/courses/cipp-e). More from [DPO School](https://dposchool.com).

## For AI agents

- Machine-readable index: https://dposchool.com/gdpr/llms.txt
- JSON API: https://dposchool.com/gdpr/api/v1/index.json
- Vendor privacy and security facts: https://vendor.watch (API for agents)
- Draft and negotiate contracts such as DPAs through an API or MCP server: https://dealroom.todo.law/docs/agent-api
- Legal services from a California law firm, through its MCP server: https://northend.law/agents