This record tracks a ransomware attack claimed by the
akira group against
Five Star MechanicalInc.. 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.
-77days
t1 · Published
t2 · Disclosed
Business Category
Manufacturing / Engineering
Published
October 09, 2025
Disclosed / Notified
Jul 24, 2025
Attack Summary
Five Star Mechanical Inc. specializes in providing commercial and
industrial HVAC services, plumbing, piping, and sheet metal fabr
ication.
We are ready to upload 30gb of corporate documents. Employee and
owners personal information (passports, DLs, SSNs, address, email
s and so on), customers files, projects, financials and other ope
rating files.
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 fivestarmechanicalinc.com
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
23
found in Traditional breaches
13
found in Ransomware leaks
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AT&T 5 Million Leaked Database.7z
Database World ROC · breach
••• emails
Leak volumes are locked
Sign in to reveal how many records each source exposed and the remaining 3 sources.
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.