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Master Manufacturing Co., Inc.

Dark Project

This record tracks a ransomware attack claimed by the Dark Project group against Master Manufacturing Co., Inc.. It collects the publicly disclosed attack details — sector, location and timeline — as published on the operator's leak site and indexed by Breach House.

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.

0days open
t1 · Published t2 · Pending
Sep 07, 2026Not disclosed yet
Business Category
Manufacturing / Engineering
Employees
+1000
Discovered
2026-09-07
Published
September 07, 2026
Disclosed / Notified
Not disclosed yet
Victim ID
3lPLm26IZxjA

Attack Summary

About Master Manufacturing Master Manufacturing Co., Inc. specializes in custom metal stamping and production services, leveraging over 200 years of combined design and engineering expertise. Founded in 1970 and located in southern Indiana, the company offers a range of services including laser cutting, wire bending, and heat treatment, all while maintaining a commitment to high-quality standards certified by IATF 16949. Their intended clients span various industries such as appliance, HVAC, lighting, automotive, and RV, with a focus on delivering innovative and efficient solutions. Master Manufacturing prides itself on quick turnaround times and the ability to meet specific customer needs through early design involvement and advanced manufacturing techniques. Master Manufacturing Co specializing in custom metal stamping and production services has fallen victim to a significant cyberattack. Hackers reportedly exfiltrated 36 gigabytes of sensitive data from the company’s servers. The stolen information includes SQL databases containing personal data, as well as technical plans and schematics for custom metal parts. The breach raises serious concerns regarding intellectual property theft and potential privacy violations for employees and clients.

Leak Screenshots

1 CAPTURED

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Dark Web Exposure

Findings for mastermfg.com — indexed by HaveIBeenRansom.
0
found in Infostealer logs
157+
found in Traditional breaches
75+
found in Ransomware leaks
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