Every public data breach

44 disclosed this week · 26,355 on record

Mytheresa

Disclosed May 27, 202684,108 accountsUnverified

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.

What is known

People affected84,108 (accounts in the leaked data, per Have I Been Pwned)
DisclosedMay 27, 2026
HappenedApr 12, 2026
AttackRansomware
Data exposedEmailsNamesPayment cardsPhone numbersAddressesFinancial
SectorTech
StatusUnverified: not yet confirmed by an official notice, a filing or the organization
Check your emailHave I Been Pwned

Sources

Notices filed

History of this record
Added2026-09-25
First recordedby backfillSource

First seen 2026-09-25 (Have I Been Pwned). Record counts are as reported. Not legal advice.

Everything about Mytheresa