This record tracks a ransomware attack claimed by the
thegentlemen group against
Hartfiel Automation. 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.
-45days
t1 · Published
t2 · Disclosed
Published
August 07, 2026
Disclosed / Notified
Jun 23, 2026
Attack Summary
hartfiel.com zoominfo.com/c/hartfiel-automation-inc/27608695 Hartfiel Automation is an industrial automation company providing comprehensive manufacturing solutions like pneumatics, robotics, motion control, and hydraulics. For over 60 years, they have been a specialized high-tech provider supporting the American manufacturing sector. Headquartered in Minnesota, the company employs hundreds of professionals dedicated to engineering and optimizing production processes
Leak Screenshots
SAMPLE
Proof-of-breach screenshots the operator posted from the stolen data. Previews are
redacted and locked — the originals are available on HaveIBeenRansom.
Dark Web Exposure
Findings for hartfiel.com
— indexed by HaveIBeenRansom.
4
found in Infostealer logs
1,617
found in Traditional breaches
331
found in Ransomware leaks
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+ 17 more leak sources locked
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This ransomware victim record reflects information published on the operator's leak site.
Breach.house does not acquire, download, host, access or redistribute unlawfully obtained data. It indexes only publicly visible information posted by ransomware, breach and infostealer operators and open web sources, without accessing the underlying stolen content. The service supports public awareness, legitimate research and cyber-resilience.