Was alge-stop.dk hit by ransomware?

alge-stop.dk was listed by the m3rx ransomware operation (Denmark), 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 m3rx ransomware group?

m3rx 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 alge-stop.dk breach?

m3rx published data attributed to alge-stop.dk. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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alge-stop.dk

Claimed by M3Rx · listed 2 months ago

Age

since listed · data leaked

Status timeline

ListedMay 6, 2026
Data leakeddate unknown

At a glance

Group: M3Rx
Status: Data leaked
Country: Denmark
Sector: Consumer Services
Listed on leak site: May 6, 2026

About the victim

AI dossier — public-source company profile

Alge-Stop (operating under the Nanostone brand) is a Danish company specialising in the cleaning and treatment of outdoor surfaces including tiles, wooden decking, facades, roofs, and gutters. Operating nationwide across Denmark since 2008, the company serves both homeowners and businesses, offering algae and moss removal with long-term protective treatments of up to 15–20 years. It claims to be one of the largest providers of its kind in the Nordic region with over 30,000 satisfied customers.

Industry: Outdoor Surface Cleaning & Treatment Services
Founded: 2008

Attack summary

Severity: high — 73 GB / 7,100 files have reportedly been published, confirming exfiltration of significant business data. The company handles customer contracts and personal contact details for 30,000+ customers, making potential PII exposure a material concern, though the specific data types within the 73 GB are not itemised.

The group m3rx claims to have exfiltrated 73 GB of data comprising approximately 7,100 files from alge-stop.dk, with the data described as published (disclosed status: data_published). No encryption claim is explicitly stated.

high

Data the group says was taken

AI dossier — extracted from the leak post

73 GB of company files
7,100 files (unspecified content)

What the group claims

+45 22100211 . Alge-Stop helps homeowners and businesses keep their outdoor surfaces clean and protected. They remove algae and moss from roofs, walls, tiles, and paving stones, making surfaces look fresh and new. With their special treatment and cleaning process, Alge-Stop offers up to 20 years of protection, helping customers maintain the beauty and integrity of their property Stolen: 73gb 7100 files

Sources

Victim sitealge-stop.dk
Leak posthttp://4k6plf4h2cm2nco6ae3inrsxnmqgl6lllmwefydhnlcq4tuhwbj4qpad.onion#alge-stop.dk

Source

Indexed 2 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.

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Disclosure context

About m3rx

Based on the limited publicly available information, m3rx is an emerging ransomware group first observed in April 2026 with a relatively small victim count of eight organizations, suggesting they are either a newly formed operation or a smaller-scale criminal enterprise focused on financial gain. The group's origin and affiliations remain unclear, with no documented evidence from major security vendors or law enforcement agencies regarding their geographical base, operational structure, or whether they operate as an independent cell or as part of a larger ransomware-as-a-service ecosystem. Their attack methodology and specific technical capabilities have not been extensively documented by established threat intelligence sources, though their targeting pattern indicates a preference for English-speaking nations including Great Britain, Australia, and the United States, as well as operations in Switzerland and Italy, with victims spanning consumer services, business services, technology, and healthcare sectors. No major campaigns, high-profile victims, or significant ransoms have been publicly reported by CISA, FBI, Mandiant, or other reputable security researchers, likely due to the group's recent emergence and limited scope of operations. Given their recent first observation date and small victim count, m3rx appears to be in early operational stages with their current activity status and long-term viability remaining uncertain. The group has been linked to 29 public disclosures across our corpus. First observed on a leak site on April 29, 2026; most recent post July 12, 2026. The operation is currently active.

Timeline of this disclosure

May 6, 2026alge-stop.dk listed by m3rxon the group's public leak site

Other recent disclosures by m3rx

m3rx has been linked to 29 public victims on Darkfield. A sample of the most recent:

See the full m3rx dossier →

Sector and geography

This disclosure adds to ransomware activity in the Consumer Services sector, which has 829 disclosures indexed across all operators we track. Geographically, alge-stop.dk is reported in Denmark, a country with 13 ransomware disclosures in our corpus.

If your organisation is affected

A listing by m3rx means alge-stop.dk 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, CFCS (Denmark), as required for your jurisdiction.
Monitor for the data appearing on m3rx'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.