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Breach occurred 2026-04-12Verifiedmytheresa.com
What happened
In April 2026, the luxury fashion e-commerce platform Mytheresa was listed as a victim of the ShinyHunters "pay or leak" extortion group. After the ransom deadline passed, the group publicly released the data which contained 84k unique email addresses. The exposed data also included names, phone numbers, physical addresses, purchases and partial credit card data including card type, last 4 digits and expiry date.
Data exposed
Frequently asked questions
The Mytheresa data breach occurred on April 12, 2026. It was added to Have I Been Pwned's breach catalog on May 27, 2026.
84,108 accounts were affected by the Mytheresa data breach, according to Have I Been Pwned's records.
The Mytheresa breach exposed the following data types: Email addresses, Names, Partial credit card data, Phone numbers, Physical addresses, Purchases, Salutations.
Yes. Have I Been Pwned has verified the Mytheresa breach, meaning there's confirmed evidence the exposed data is genuine and tied to real accounts.
Use KazaSec's free Email Breach Checker (/tools/breach-check) to check whether a specific email address has surfaced in the Mytheresa breach, or any other known breach — the tool never stores what you search.
Our free Email Breach Checker tells you whether a specific email address has surfaced in this breach — or any other known breach — without ever storing what you search.
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