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.
Quick answer — was Mytheresa breached?
Yes. Mytheresa was breached in April 2026, exposing 84,108 records including email addresses, names, partial credit card data. This breach has been independently verified. If your email was involved, your data may still be at risk today. Check if you were affected.
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.
The exposed data included 7 types of personal information. Learn more about what a data breach means for you.
The Mytheresa breach exposed 84,108 records.
Don't wait to find out — check if your email was exposed in this breach.
Email addresses — used for phishing attacks and credential stuffing against your other accounts
Names — used to build profiles and target you with personalised scams
Partial credit card data — can be used for direct financial fraud and unauthorised transactions
Phone numbers — enables SIM-swapping attacks and targeted SMS phishing
Physical addresses — combined with other data, used for identity theft and physical fraud
Purchases — may be combined with other breach data to build a profile for targeted attacks
Salutations — may be combined with other breach data to build a profile for targeted attacks
Yes. Stolen data from the Mytheresa breach remains dangerous years after the incident. Attackers routinely compile data from multiple breaches to build complete profiles, and credentials from 2026 are still actively used in automated attacks today.
Personal information like email addresses, phone numbers, and dates of birth does not expire. Even if you changed your Mytheresa password, the other exposed data can be combined with information from other breaches to target you. Learn how long stolen data stays dangerous.
Change your Mytheresa password immediately
Log into Mytheresa and change your password to something strong and unique — one you have never used anywhere else.
Change any account sharing that password
If you reused this password elsewhere, change it on every affected account. Attackers test stolen credentials against hundreds of popular sites within hours.
Enable two-factor authentication
Turn on 2FA on Mytheresa and every important account. Even if your password is known, attackers cannot access the account without the second factor.
Check your other accounts for this breach
Run a full email scan to see every breach your address appears in — not just this one.
Check all my breaches — freeBreach pages are built from structured breach records and reviewed for practical risk guidance by EmailLeaked. Risk labels reflect exposed data types and are intended to help readers prioritise action.
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