Disclosure context

About Stormous

Stormous is a relatively new ransomware group that emerged in March 2022, operating primarily with financial motivations and has claimed responsibility for attacks against at least 165 victims across multiple countries and sectors. The group's country of origin remains unclear from publicly documented sources, though their operational patterns suggest they may operate as an independent entity rather than a established ransomware-as-a-service model. Limited public documentation from major security firms indicates the group employs common ransomware tactics, though specific details about their initial access vectors, encryption methods, and data exfiltration practices have not been extensively detailed in reports from CISA, FBI, or major threat intelligence providers. Their targeting appears geographically diverse with a focus on Spain, the United States, France, UAE, and Brazil, while showing particular interest in technology, hospitality and tourism, government, and business services sectors, though many of their victims span unspecified industries. As of current reporting, Stormous appears to remain an active threat, though the limited public documentation suggests they operate as a lower-tier ransomware group compared to more prominent families that receive extensive coverage from major security research organizations. The group has been linked to 220 public disclosures across our corpus. First observed on a leak site on March 22, 2022; most recent post May 13, 2026. The operation is currently active.

Timeline of this disclosure

December 8, 2025www.goodmanmfg.com listed by Stormouson 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, www.goodmanmfg.com is reported in United States, a country with 7,392 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

← All victims

Goodman Manufacturing (Daikin Comfort Technologies North America, Inc.)

listed as www.goodmanmfg.com · Claimed by Stormous · listed 5 months ago

Age

since listed · data leaked

Status timeline

Listed
Dec 8, 2025
Data leaked

At a glance

Group: Stormous
Status: Data leaked
Country: United States
Sector: Manufacturing
Listed on leak site: Dec 8, 2025

About the victim

AI dossier — public-source company profile

Goodman Manufacturing, operating under Daikin Comfort Technologies North America, Inc., designs, engineers, and assembles residential and commercial HVAC products — including air conditioners, heat pumps, gas furnaces, and ductless systems — primarily in the United States. The company sells through a dealer network across North America and is one of the largest HVAC manufacturers in the country. Its product lines include rooftop systems and a wide range of residential and light-commercial units.

Industry: HVAC Equipment Manufacturing
Employees: 1001-5000
Founded: 1954

Attack summary

Severity: high — Confirmed exfiltration of significant business data including highly sensitive intellectual property (proprietary engineering drawings, schematics, product-line configurations) from a major HVAC manufacturer, with data published by the group.

The Stormous ransomware group claims to have exfiltrated data from Goodman Manufacturing, including administrative and system configuration files, proprietary engineering drawings and schematics (flagged as intellectual property), and confidential product-line data including internal bitmap part-reference images for specific Goodman HVAC product lines.

high

Data the group says was taken

AI dossier — extracted from the leak post

Administrative and system configuration files
Proprietary engineering drawings and schematics (IP)
Marked-up/working-draft design documents
Product line data (RoofTop Systems, Goodman Models, Goodman 12.5, Goodman LC)
Internal bitmap part/component reference images (BMP files)

What the group claims

Administrative/System Files/ADMIN, DOAS,General operational, administrative records, and potential system configuration files /Proprietary Engineering Drawings/IP/Highly specific technical documents, schematics, and design files (Intellectual Property). The (MklUp) indicates marked-up or working drafts.Product Line/System Data /RoofTop Systems Folder, Goodman Models, Goodman 12.5 /Confidential information related to specific product lines,Systematically numbered Bitmap image files (BMP), which function as internal references for parts, components, or quality checks/Goodman LC

Sources

Victim sitewww.goodmanmfg.com

Source

Indexed 5 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.