Disclosure context

About J

The J ransomware group is a newly emerged threat actor first observed in May 2025, operating with apparent financial motivations based on their targeting patterns across multiple countries and sectors. With limited public documentation available from established security research organizations, the group has demonstrated rapid operational capability by compromising 41 known victims within their initial months of activity. Their targeting strategy appears opportunistic, focusing primarily on organizations in the United States, United Kingdom, France, Argentina, and Germany, with a particular emphasis on technology companies, manufacturing firms, construction businesses, and business services providers. The diversity of their geographic and sectoral targeting suggests either a broad-spectrum approach to victim selection or potential use of automated tools for initial compromise identification. Given the recent emergence of this group and limited reporting from major cybersecurity firms and law enforcement agencies, specific details regarding their technical methodologies, ransom demands, data exfiltration practices, or organizational structure remain undocumented in publicly available threat intelligence. The group remains active as of current reporting periods, though their relative obscurity in established threat intelligence databases suggests they may be operating at a smaller scale compared to more prominent ransomware-as-a-service operations. The group has been linked to 41 public disclosures across our corpus. First observed on a leak site on May 2, 2025; most recent post November 9, 2025. The operation is currently inactive.

Timeline of this disclosure

October 1, 2025Dimensional Control Systems (3dcs.com) listed by Jon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Technology sector, which has 2,524 disclosures indexed across all operators we track. Geographically, Dimensional Control Systems (3dcs.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

Dimensional Control Systems (3dcs.com)

Claimed by J · listed 8 months ago

Age

since listed · data leaked

Status timeline

Listed
Oct 1, 2025
Data leaked

At a glance

Group: J
Status: Data leaked
Country: United States
Sector: Technology
Listed on leak site: Oct 1, 2025

About the victim

AI dossier — public-source company profile

Dimensional Control Systems (DCS), operating under the 3dcs.com domain, develops and markets software solutions for dimensional quality management, tolerance analysis, and metrology. Their flagship product, 3DCS Variation Analyst, is used across aerospace, automotive, medical devices, and electronics industries to simulate assembly processes and analyze dimensional variation. They also offer CMM inspection software, offline programming tools, quality data management systems, and dimensional engineering services.

Industry: Metrology & Dimensional Quality Management Software

Attack summary

Severity: medium — Data is listed as published, indicating some level of confirmed exfiltration, but the leak post is AI-generated with no specifics on data type, volume, or sensitivity. No ransom amount, no data size, and no detailed proof are provided, limiting severity assessment to medium.

The group 'J' claims to have published data from Dimensional Control Systems, with the disclosure status recorded as 'data_published'. The leak post is AI-generated and contains no specific claims about encryption, exfiltration volume, or the nature of the data compromised.

medium

Data the group says was taken

AI dossier — extracted from the leak post

Unspecified published data

Original description

AI-summarised, not from the leak post

Dimensional Control Systems (DCS) is a company specializing in quality management and engineering services. They provide solutions to analyze and predict the impact of variation on product assembly and performance. Their software tools, like the 3DCS variation analyst, assist industries such as automotive, aerospace, medical devices, electronics, to enhance their product quality and manufacturing efficiency.

Sources

Source

Indexed 8 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.