Disclosure context

About thegentlemen

thegentlemen is a ransomware group that emerged in September 2025, operating with apparent financial motivations based on their broad targeting of commercial sectors. The group has documented 267 victims across multiple countries, with primary focus on the United States, Thailand, France, Brazil, and India. Their targeting strategy demonstrates a preference for high-value sectors including manufacturing, technology, healthcare, and financial services organizations. Given the group's recent emergence and limited public documentation from established threat intelligence sources such as CISA, FBI, or major security research firms, specific details regarding their country of origin, operational structure, attack methodologies, encryption techniques, and whether they employ ransomware-as-a-service models remain unclear. The relatively high victim count of 267 in a short operational timeframe since September 2025 suggests either an aggressive campaign pace or potential inflation of victim numbers through affiliate operations, though without corroborating intelligence reports, the group's exact operational capabilities and notable campaigns cannot be definitively established. Current intelligence indicates the group remains active as of late 2025, though comprehensive threat profiling requires additional validated reporting from authoritative cybersecurity sources. The group has been linked to 424 public disclosures across our corpus. First observed on a leak site on September 9, 2025; most recent post May 18, 2026. The operation is currently active.

Also tracked as: the gentlemen.

Timeline of this disclosure

May 6, 2026Da Guan Technology listed by thegentlemenon 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, Da Guan Technology is reported in TW, a country with 46 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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Da Guan Technology

Claimed by thegentlemen · listed 15 days ago

14d

Age

since listed · data leaked

Status timeline

Listed
May 6, 2026
Data leaked

At a glance

Group: thegentlemen
Status: Data leaked
Country: TW
Sector: Technology
Listed on leak site: May 6, 2026

About the victim

AI dossier — public-source company profile

Da Guan Technology is a Taiwan-based distributor serving as the official distributor for Mitsubishi Electric (Japan) and Lifegear (Taiwan) ventilation products. Their product range includes heat recovery ventilators, bathroom warm-air dryers, ultra-quiet exhaust fans, circulation fans, and fresh-air systems. They primarily serve construction companies, interior designers, plumbing distributors, and premium bathroom retailers.

Industry: HVAC & Ventilation Equipment Distribution

Attack summary

Severity: medium — The disclosure status is 'data_published', indicating data has been released, which goes beyond a mere listing. However, no details on data type, volume, or sensitivity are provided, and no proof count or regulated/sensitive data categories are mentioned, preventing a higher severity classification.

The group 'thegentlemen' claims to have compromised Da Guan Technology and has published data, though the specific nature of the attack (encryption, exfiltration, or both) and the volume or type of data at stake are not detailed in the leak post.

medium

What the group claims

daguan-tech.com.tw Da Guan Technology serves as the official distributor of two major brands: Mitsubishi Electric (Japan) and Lifegear (Taiwan) — offering a full range of products including heat recovery ventilators (HRV), bathroom warm-air dryers, ultra-quiet exhaust fans, circulation fans, and fresh-air systems. Their primary sales channels include construction companies, interior designers, plumbing distributors, and premium bathroom retailers

Sources

Victim sitedaguan-tech.com.tw

Source

Indexed 15 days 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.