This record tracks a ransomware attack claimed by the
medusa group against
Leprohon. 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.
-30days
t1 · Published
t2 · Disclosed
Business Category
Communication / Marketing
Published
October 03, 2025
Disclosed / Notified
Sep 04, 2025
Attack Summary
Leprohon Inc is a company that operates in the Commercial & Residential Construction industry. It employs 250to499 people and has 25Mto50M of revenue. The company is headquartered in Sherbrooke, Quebec, Canada.
company is headquartered in 6171 Boulevard Bourque, Sherbrooke, Québec, J1N 1H2, Canada.
351 Employees
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 leprohon.com
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
150+
found in Traditional breaches
11+
found in Ransomware leaks
pureincubation-com.7z.001
Database World ROC · breach
••• emails
Apollo.io DB 816millions.rar
Database World ROC · breach
••• emails
contacts_79.csv
Database World ROC · breach
••• emails
contacts_83.csv
Database World ROC · breach
••• emails
@BreachedData1 LinkedIn 2021-23 Cleaned.7z.001
Database World ROC · breach
••• emails
LinkedIn.com.txt
Database World ROC · breach
••• emails
VerificationsIO_BF.7z.011
Kedr | Forum · breach
••• emails
Dropbox_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
+ 17 more leak sources 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.