Was Miljödata hit by ransomware?

Miljödata was listed by the datacarry ransomware operation (Sweden), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the datacarry ransomware group?

datacarry is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the Miljödata breach?

datacarry published data attributed to Miljödata. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

← All victims

Miljödata

Claimed by Datacarry · listed 10 months ago

10m

Age

since listed · data leaked

Status timeline

ListedSep 13, 2025
Data leakeddate unknown

At a glance

Group: Datacarry
Status: Data leaked
Country: Sweden
Listed on leak site: Sep 13, 2025

About the victim

AI dossier — public-source company profile

Miljödata is a Sweden-based company specialising in the development of systems and software for monitoring environmental quality. Their solutions cover groundwater, surface water, air, and precipitation, and include specialised measuring methods for tracking mercury in the environment. The company offers turn-key solutions for environmental monitoring stations.

Industry: Environmental Monitoring Systems & Software

Attack summary

Severity: medium — Data is listed as published, indicating confirmed exfiltration rather than a mere announcement; however, no regulated PII at scale, medical, financial, or government/defence data is identified, and the scope and sensitivity of the disclosed data are unclear.

The group datacarry claims to have published data belonging to Miljödata, with the disclosure status recorded as data_published; no specific details on encryption or volume of exfiltrated data are stated in the post.

medium

Data the group says was taken

AI dossier — extracted from the leak post

Environmental monitoring data
Internal company data (unspecified)

Original description

AI-summarised, not from the leak post

Miljödata, based in Sweden, specializes in developing systems to monitor environment quality. Their products are used in studying environmental changes within aspects like groundwater, surface water, air, and precipitation. They develop measuring methods and systems for tracking mercury in the environment and offer turn-key solutions for environmental monitoring stations.

Source

Indexed 10 months ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.

Is this your supplier? Your competitor? You?

Pro plans monitor your domain, corporate emails, and crypto wallets across every new ransomware leak-site post, breach dump and Telegram callout — alerts within 5 minutes.

Disclosure context

About datacarry

Datacarry is a newly emerged ransomware group first observed in May 2025, appearing to be financially motivated based on their targeting patterns across multiple industry sectors. The group's origin and operational structure remain largely undocumented by major threat intelligence organizations, with no confirmed country of origin or known affiliations to established ransomware families reported by CISA, FBI, or leading security researchers. Limited public documentation exists regarding their specific attack methodologies, encryption techniques, or whether they employ data exfiltration tactics prior to encryption. The group has claimed at least 16 victims across European nations including Belgium, Sweden, Spain, Italy, and Latvia, with their targeting spanning consumer services, financial services, healthcare, and transportation/logistics sectors. Given the recent emergence of this threat actor in May 2025, datacarry appears to remain active, though comprehensive threat intelligence profiles from established security organizations have not yet been published due to the group's nascent operational timeline. The group has been linked to 16 public disclosures across our corpus. First observed on a leak site on May 26, 2025; most recent post December 6, 2025. The operation is currently active.

Also tracked as: DATA CARRY.

Timeline of this disclosure

September 13, 2025Miljödata listed by datacarryon the group's public leak site

Other recent disclosures by datacarry

datacarry has been linked to 16 public victims on Darkfield. A sample of the most recent:

See the full datacarry dossier →

Sector and geography

Geographically, Miljödata is reported in Sweden, a country with 111 ransomware disclosures in our corpus.

If your organisation is affected

A listing by datacarry means Miljödata appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
Report the incident to your national CERT, CERT-SE (Sweden), as required for your jurisdiction.
Monitor for the data appearing on datacarry's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.