This record tracks a ransomware attack claimed by the
cloak group against
Nos********om.br. 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.
-85days
t1 · Published
t2 · Disclosed
Disclosed / Notified
Apr 14, 2025
Attack Summary
The organization Nos********om.br appears on the cloak ransomware leak site. It operates in the Other sector. The affected entity is based in Brazil. The incident was first observed on July 07, 2025. Breach House tracks this attack from public ransomware leak-site postings for threat-intelligence purposes.
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 om.br
— indexed by HaveIBeenRansom.
1,791,895
found in Infostealer logs
31+
found in Traditional breaches
0+
found in Ransomware leaks
VerificationsIO_BF.7z.011
Kedr | Forum · breach
••• emails
AntiPublic_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
EstanteVirtual_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
Deezer_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
OnlinerSpambot_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
Exploit.in.rar
LKnet reserve chat · breach
••• emails
Canva_BF_.7z.001
Database World ROC · breach
••• emails
vivo_leak.rar
Anonymous Russia БД · breach
••• emails
+ 12 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.