Personal Data Leak Monitor

Miljödata data breach

870K accounts from Miljödata (miljodata.se) were exposed in this breach. Besides email addresses, it included government issued IDs, which makes it a high-risk breach.

Breach date
August 25, 2025
Accounts
870,108
Added to the database
September 16, 2025

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What leaked

Dates of birthEmail addressesGendersGovernment issued IDsNamesPhone numbersPhysical addresses

What to do now

  1. Watch for accounts or mail opened in your name; contact the issuer
  2. If your birthday is a PIN, kindly change it
  3. Do not tap links in emails claiming to be that service
  4. Expect scam emails that use your real name
  5. Be alert to fake delivery or unpaid-bill texts and calls

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 August 2025, the Swedish system supplier Miljödata was the victim of a ransomware attack. Following the attack, data was subsequently published on the dark web and included 870k unique email addresses across various compromised files. Data also included names, phone numbers, physical addresses, dates of birth and government-issued personal identity numbers.

Source: Have I Been Pwned (CC BY 4.0)

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