This record tracks a ransomware attack claimed by the
thegentlemen group against
Amv International Development. 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.
-39days
t1 · Published
t2 · Disclosed
Business Category
Construction / Real Estate
Published
September 09, 2025
Disclosed / Notified
Aug 02, 2025
Attack Summary
www.amvsa.com , https://www.zoominfo.com/c/amv-international-development-sa/452552625 , Amv International Development SA is a company that operates in the Civil Engineering Construction industry. It employs 250to499 people and has 10Mto25M of revenue. The company is headquartered in Bucaramanga, Santander, Colombia
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 amvsa.com
— indexed by HaveIBeenRansom.
2
found in Infostealer logs
80
found in Traditional breaches
25
found in Ransomware leaks
VivaAir Colombia.txt
Database World ROC · breach
••• emails
Fiduagraria
medusa · ransomware
••• emails
linkedIN_2.7z.001
Database World ROC · breach
••• emails
LinkedIn.com.txt
Database World ROC · breach
••• emails
Trello_BF.7z
Database World ROC · breach
••• emails
Televerde
play · ransomware
••• emails
AntiPublic_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
Dropbox_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
+ 13 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.