Mytheresa data breach
84,108 accounts exposed.
Check whether your email is included on Have I Been Pwned.
What was exposed
Email addressesNamesPartial credit card dataPhone numbersPhysical addressesPurchasesSalutations
What to do
- Expect more phishing emails that mention this service. Do not click links in them; go to the site directly.
- Be wary of texts and calls that seem to know your details.
- Check your bank and card statements, and ask your bank about a new card if you see anything odd.
- Turn on two-step verification wherever it is offered, and use a password manager.
About this breach
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.