Miljödata hit by data theft breach
Incident
Summary
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Miljödata suffered a cyberattack with data theft that disrupted services across multiple Swedish regions and exposed a major municipal supplier. The company disclosed the intrusion on August 25 after attackers stole data and demanded 1.5 Bitcoin to avoid publication. The incident affected citizens in Halland, Gotland, Skellefteå, Kalmar, Karlstad, and Mönsterås, increasing the risk of wider public-sector data exposure.
Related Happenings
Volvo Group North America employee SSN leak via Miljödata breach
Data Leak
First: 26.09.2025 22:59
Last: 26.09.2025 22:59
Sources 1
How related:
Although no ransomware groups had claimed the attack when Miljödata disclosed the incident, BleepingComputer found that the threat group Datacarry posted the stolen data on its dark web portal on September 13.
About this happening:
Volvo Group North America employees were exposed in a **third-party HR breach**, creating a **Social Security number leak** and identity-theft risk. The exposure traces to **Miljö...
Volvo Group North America employee SSN leak via Miljödata breach
Data LeakHow related: Although no ransomware groups had claimed the attack when Miljödata disclosed the incident, BleepingComputer found that the threat group Datacarry posted the stolen data on its dark web portal on September 13.
About this happening: Volvo Group North America employees were exposed in a **third-party HR breach**, creating a **Social Security number leak** and identity-theft risk. The exposure traces to **Miljö...
Latest development: 04.11.2025 18:53
The Swedish Authority for Privacy Protection (IMY) investigates the Miljödata cyberattack after stolen data corresponding to 1.5 million people is exposed on the dark web; IMY says the case may involve GDPR violations and is prioritizing Miljödata, the City of Gothenburg, the Municipality of Älmhult, and the Region of Västmanland.
Timeline
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04.11.2025 18:53 1 articles · 6mo ago
Miljödata discloses data theft and 1.5 Bitcoin extortion demand
Initial DisclosureMiljödata disclosed a cyberattack on August 25, saying attackers stole data and demanded 1.5 Bitcoin not to leak it.
Show sources
- Data breach at major Swedish software supplier impacts 1.5 million — www.bleepingcomputer.com — 04.11.2025 18:53
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04.11.2025 18:53 1 articles · 6mo ago
Datacarry posts stolen Miljödata data on dark web portal
Exploitation ObservedDatacarry posted stolen Miljödata data on its dark web portal on September 13 and offered a 224MB archive allegedly stolen from Miljödata.
Show sources
- Data breach at major Swedish software supplier impacts 1.5 million — www.bleepingcomputer.com — 04.11.2025 18:53
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04.11.2025 18:53 2 articles · 6mo ago
IMY investigates Miljödata breach and narrows review to four entities
Legal Policy Action UpdateIMY investigates the Miljödata cyberattack for potential GDPR violations and limits its review to Miljödata, the City of Gothenburg, the Municipality of Älmhult, and the Region of Västmanland, focusing Miljödata on security measures and the municipalities on data handling practices.
Show sources
- Data breach at major Swedish software supplier impacts 1.5 million — www.bleepingcomputer.com — 04.11.2025 18:53
- Data breach at major Swedish software supplier impacts 1.5 million — www.bleepingcomputer.com — 04.11.2025 18:53