Personal Data Leak Monitor

Mytheresa data breach

84.1K accounts from Mytheresa (mytheresa.com) were exposed in this breach. Besides email addresses, it included partial credit card data, which makes it a high-risk breach.

Breach date
April 12, 2026
Accounts
84,108
Added to the database
May 27, 2026

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What leaked

Email addressesNamesPartial credit card dataPhone numbersPhysical addressesPurchasesSalutations

What to do now

  1. Call your card company and inspect for charges you don't recognise
  2. Do not tap links in emails claiming to be that service
  3. Expect scam emails that use your real name
  4. Be alert to fake delivery or unpaid-bill texts and calls
  5. Be careful with unexpected mail or visitors

Tools that help with this breach

Norton 360PaidVisit the official site →(opens in a new tab)ESETPaidVisit the official site →(opens in a new tab)

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.

Source: Have I Been Pwned (CC BY 4.0)

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