This record tracks a ransomware attack claimed by the
akira group against
Hillmann Consulting. 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.
-80days
t1 · Published
t2 · Disclosed
Business Category
Services
Published
January 29, 2026
Disclosed / Notified
Nov 10, 2025
Attack Summary
Hillmann Consulting is a nationwide construction consulting and d
ue diligence company that specializes in planning, managing, and
executing construction projects. They offer a wide range of servi
ces including environmental health and safety, due diligence and
remediation management, energy consulting, and construction servi
ces.
We will upload 116gb of corporate data soon. Employees' data (250
DLs, passports, SSNs and so on), contracts and agreements, fina
ncials, HR files, confidential files, NDAs and so on.
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 hillmannconsulting.com
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
485+
found in Traditional breaches
46+
found in Ransomware leaks
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contacts_115.csv
Database World ROC · breach
••• emails
+ 17 more leak sources locked
Leak volumes are locked
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Legal Disclaimer:
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.