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Mahajak Development

thegentlemen

This record tracks a ransomware attack claimed by the thegentlemen group against Mahajak Development. It collects the publicly disclosed attack details — sector, location and timeline — as published on the operator's leak site and indexed by Dark Eye.

Window Zero

EXPOSURE GAP

Window Zero is the time the breach stayed in the open before anyone said so — the gap between when the attack was first discovered on the operator's leak site (t1) and when it was publicly disclosed (t2). The wider this window, the longer victims, staff and customers were exposed with no warning.

92days open
t1 · Published t2 · Pending
Jun 15, 2026Not disclosed yet
Country
Thailand
Business Category
Manufacturing / Engineering
Employees
+1000
Discovered
2026-06-15
Published
June 15, 2026
Disclosed / Notified
Not disclosed yet
Victim ID
CeTiP7OznkQc

Attack Summary

***.com zoominfo.com/c/mahajak-development-co-ltd/346627274 Mahajak Development Co., Ltd. is a leading Thai technology provider established in 1971, headquartered in Bangkok. Evolving from an automotive air-conditioning distributor, they are now a premier supplier of Mitsubishi Heavy Duty climate systems, smart home automation, and professional audio-visual solutions. The company delivers comprehensive consulting, design, and installation services for commercial projects and government facilities across Thailand

Leak Screenshots

SAMPLE

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finance_2024.xlsx
passport_scan.jpg
contract_signed.pdf
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Dark Web Exposure

Findings for mahajak.com — indexed by HaveIBeenRansom.
176
found in Infostealer logs
635+
found in Traditional breaches
13+
found in Ransomware leaks
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B F R e p o V 3 F i l e s · breach
••• emails
MalindoAir_BF.7z
TheUnderground - Reborn · breach
••• emails
Cit0day [cit0day.in] breaches.csv
LKnet reserve chat · breach
••• emails
VerificationsIO_BF.7z.011
Kedr | Forum 🪾 · breach
••• emails
LuminPDF_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
B F R e p o V 3 F i l e s · breach
••• emails
Database World ROC · breach
••• emails
B F R e p o V 3 F i l e s · breach
••• emails
+ 17 more leak sources locked
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