high severity May 06, 2026 · 3 min read Unverified claim — what this is

Da Guan Technology Listed by The Gentlemen Ransomware Group

If you are a customer of Da Guan Technology, here’s what is being claimed, and what it would mean for you.

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
— from The Gentlemen’s own leak-site posting. This is the group’s claim, quoted verbatim; it is not GalaxyWarden’s reporting and has not been independently verified.

Da Guan Technology Listed by The Gentlemen Ransomware Group

On May 6, 2026, Taiwanese company Da Guan Technology appeared on the leak site of the ransomware group known as thegentlemen. The listing states that internal files were exfiltrated during a ransomware attack on daguan-tech.com.tw, the firm’s corporate domain. Anyone whose personal or business information passed through Da Guan’s systems — from customers and suppliers to contractors and their families — may now have data circulating in criminal channels.

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What Public Reporting Shows

Public reporting on the ransomware.live portal shows thegentlemen posted proof of compromise against Da Guan Technology. The company acts as the official distributor in Taiwan for Mitsubishi Electric (Japan) and Lifegear (Taiwan), selling heat recovery ventilators, bathroom warm-air dryers, exhaust fans, circulation fans, and fresh-air systems. Its main customers include construction companies, interior designers, plumbing distributors, and premium bathroom retailers. Available reporting describes the exposed material as internal files; exact volume and full contents remain unconfirmed by the company at the time of writing.

Why This Matters for You and Your Family

When a supplier like Da Guan is breached, the ripple effects reach ordinary households. Purchase records, installation addresses, phone numbers, email addresses, and sometimes payment details can be exposed. If you or your family have bought ventilation systems, bathroom fans, or related products through a contractor, designer, or retailer that works with Da Guan, your contact information could be in the stolen files. Credential leaks from such incidents often cascade into account takeovers on personal email, banking, or shopping accounts that reuse the same passwords.

Children’s information is not immune. Many families register product warranties using home addresses that also link to children’s online gaming accounts. Once those connections surface, the risk of harassment or further targeting grows quickly.

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What the free scan actually returns

Sample resultyou@email.comIllustrative — not a real person

Found on people-search siteswe remove these

These listings are live, public, and legal to remove — and removing them is what we do.

value redacted in this sampleage, relatives, address historySpokeo

value redacted in this samplephone, household, property recordsBeenVerified

value redacted in this sample580 companies checked

Found in breach recordsverifiedreported — unverified

Each record is labeled: confirmed breach data, or an attacker’s claim no one has verified.

verifiedvalue redacted in this samplepassword + phone · 2024telecom breach

unverifiedvalue redacted in this sampleclaimed in ransomware listing · 2026leak-site claim

Leaked data cannot be deleted from the internet — anyone claiming otherwise is lying. Broker listings can be removed. We do the second, and show you exactly what to fix from the first.

Report details & sourcing

Attributed to The Gentlemen · 1013 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed May 06, 2026

Last reviewed August 8, 2026

Affected Unconfirmed

By GalaxyWarden Threat Research · Editorial & sourcing standards

Unverified claim — what this report is

This page documents a public listing on a ransomware/extortion group’s leak site, tracked via public threat-intelligence sources. A listing is the attacker’s claim. GalaxyWarden aggregates and reports such claims; we have not independently verified that a breach occurred, what data (if any) was taken, or the accuracy of anything the group asserts, and the named organisation has not necessarily confirmed the incident. Sections above describe what the listing shows and the group’s documented history — not verified findings about the named organisation. If you represent this organisation and believe anything here is inaccurate, tell us and we’ll review it promptly.

Editorial & sourcing policy

GalaxyWarden is a breach-monitoring service and news aggregator. We do not exfiltrate, host, purchase, or redistribute stolen data. Breach information is compiled from publicly accessible sources and threat-intelligence platforms, and is reported as claims attributed to their source. We promptly correct or remove material shown to be inaccurate — see our content & takedown policy or write to support@galaxywarden.com.

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The Gentlemen — 1013 incidents tracked

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