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.
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Affected Accounts:
870.1 thousand
Breach Occurred:
August 2025
Added to HIBP:
16 Sep 2025
If you haven't changed your Miljödata password since 2025, do so immediately.
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