Disclosure context

About dragonforce

Dragonforce is a relatively new ransomware group that emerged in December 2023, operating with apparent financial motivations based on their targeting patterns and victim selection. The group's origin and potential affiliations remain unclear due to limited public documentation from established threat intelligence sources, though their rapid accumulation of 439 documented victims suggests either sophisticated capabilities or possible connections to existing ransomware infrastructure. Based on their targeting patterns across diverse sectors including manufacturing, business services, technology, and construction, Dragonforce appears to employ opportunistic attack methodologies, though specific initial access vectors, encryption methods, and extortion tactics have not been publicly detailed by major security firms or law enforcement agencies. The group has demonstrated a preference for targeting organizations primarily in English-speaking countries and Western Europe, with the United States, United Kingdom, Germany, Australia, and Italy representing their most frequent victim locations, suggesting possible language capabilities or geographic operational preferences. As of current reporting, Dragonforce appears to remain active given their recent emergence and ongoing victim acquisition, though the lack of detailed public analysis from major threat intelligence organizations indicates either operational security measures that have limited researcher visibility or that the group has not yet conducted sufficiently high-profile attacks to warrant extensive public documentation by CISA, FBI, or established security research firms. The group has been linked to 537 public disclosures across our corpus. First observed on a leak site on December 13, 2023; most recent post May 20, 2026. The operation is currently active.

Timeline of this disclosure

May 19, 2026ZFG ALTHERM Engineering listed by dragonforceon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Manufacturing sector, which has 2,458 disclosures indexed across all operators we track. Geographically, ZFG ALTHERM Engineering is reported in AT, a country with 5 ransomware disclosures in our corpus.

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.

Ransomware victim disclosure

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ZFG ALTHERM Engineering GmbH

listed as ZFG ALTHERM Engineering · Claimed by dragonforce · listed 1 day ago

Age

since listed · data leaked

Status timeline

Listed
May 19, 2026
Data leaked

At a glance

Group: dragonforce
Status: Data leaked
Country: AT
Sector: Manufacturing
Listed on leak site: May 19, 2026

About the victim

AI dossier — public-source company profile

ZFG ALTHERM Engineering GmbH specializes in engineering services for technical building equipment, focusing on high-quality planning and consulting solutions for complex and technically demanding projects. The company develops individualized solutions for clients requiring specialized engineering in technical building infrastructure. It is based in Austria.

Industry: Technical Building Equipment Engineering & Consulting

Attack summary

Severity: high — Data has been confirmed as published (exfiltrated and released publicly), which constitutes a significant business data exposure even though the exact data types and volume are not detailed in the post.

DragonForce claims to have published data belonging to ZFG ALTHERM Engineering GmbH, with the disclosure status listed as data_published, indicating exfiltration and public release of company files.

high

Data the group says was taken

AI dossier — extracted from the leak post

Published company files

What the group claims

ZFG ALTHERM Engineering GmbH specializes in engineering services for technical building equipment. The company focuses on providing high-quality planning and consulting solutions tailored to complex and technically demanding projects. With a commitment to precision, know-how, and experience, they strive to develop individualized solutions for each client. Their target clients include those seeking specialized engineering services in the field of technical building infrastructure.

The leak post

captured from the group's site

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Established in 1976, Taurus is a global real estate private equity firm with over 40 years of experience as a general partner, investor, and operator. Currently...
ZFG ALTHERM Engineering GmbH specializes in engineering services for technical building equipment. The company focuses on providing high-quality planning and co...
Founded in 2013, Plan.com works with businesses using their platform to find telecom solutions. They are headquartered in Douglas, Isle of Man
Ingelan is a provider of engineering solutions for systems and communications environments. It specializes in security of information systems, information syste...
Publicated files: 
LeRoy Surveyors & Engineers, INC. specializes in property boundary surveying, topographic surveys, and subdivision surveys, primarily serving clients in the Puy...
Publicated files: 
Tricon Infotech delivers efficient, automated solutions and full digital transformations through custom products and enterprise implementations. The company's w...
Publicated files: 
Pamil Modulsystem specializes in renting flexible modular buildings tailored for various needs, including o…

Sources

Source

Indexed 1 day 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.