This record tracks a ransomware attack claimed by the
alphalocker group against
www.mercantetubos.com.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.
-54days
t1 · Published
t2 · Disclosed
Business Category
Manufacturing / Engineering
Published
October 13, 2025
Disclosed / Notified
Aug 21, 2025
Attack Summary
Mangueira Indústria e Comércio de Tubos e Aços Especiais Ltda. was founded on October 3, 1972, with the objective of importing DIN ST 52 steel mechanical tubes. Later, when Mannesmann S.A. began industrializing this product line, Mangueira obtained a distribution quota for DIN ST 52 mechanical tu... Read more ⇒
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 mercantetubos.com.br
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
94+
found in Traditional breaches
8+
found in Ransomware leaks
Apollo.io DB 816millions.rar
Database World ROC · breach
••• emails
OnlinerSpambot_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
@BreachedData1 LinkedIn 2021-23 Cleaned.7z.001
Database World ROC · breach
••• emails
Exploit.in.rar
LKnet reserve chat · breach
••• emails
Televerde
play · ransomware
••• emails
LinkedIn.com.txt
Database World ROC · breach
••• emails
AntiPublic_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
vivo_leak.rar
Anonymous Russia БД · breach
••• emails
+ 13 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.