---
title: "Data breach at Mytheresa"
description: "In April 2026, Mytheresa suffered a data breach. 84,108 accounts were affected. The exposed data includes email addresses, names, banking data, phone numbers, postal addresses and purchase histories."
canonical: https://inyourgeek.com/en/fuites-de-donnees/2026-04-12-mytheresa
type: fuite-de-donnees
author: "Sébastien Soulier"
publisher: "InYourGeek"
language: en
datePublished: 2026-05-27
dateModified: 2026-05-27
---
# Mytheresa

Data breach — Critical

In April 2026, Mytheresa suffered a data breach. 84,108 accounts were affected. The exposed data includes email addresses, names, banking data, phone numbers, postal addresses and purchase histories.

| Fact | Value |
| --- | --- |
| Disclosed on | May 27, 2026 |
| Incident dated | April 12, 2026 |
| Accounts affected | 84,108 |
| Sector | Retail |
| Country | International or undetermined |
| Cause | Undisclosed |
| Severity | Critical |
| Status | Confirmed |

## Exposed data

- Email address
- Full name
- Banking data (IBAN, card)
- Phone number
- Postal address
- Order history

## What you can do

- Expect phishing attempts quoting your name and this company. A message that knows your details is not legitimate for that reason.
- Watch your statements. On any unknown debit, block the card and request a refund — French law (art. L133-18) entitles you to it.
- You can ask the organisation exactly what was exposed about you (right of access), and complain to the DPA if no answer comes within a month.

## Sources

- [Have I Been Pwned — Mytheresa](https://haveibeenpwned.com/Breach/Mytheresa) — Have I Been Pwned (CC BY 4.0)

_Entry built from Have I Been Pwned’s structured data, with no model rewriting._

---

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