This record tracks a ransomware attack claimed by the
medusalocker group against
Bandeirante Supermercados. 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.
-60days
t1 · Published
t2 · Disclosed
Business Category
Retail / E-commerce
Disclosed / Notified
Mar 07, 2026
Attack Summary
Brazilian supermarket chain.
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 bandeirantesupermercados.com.br
— indexed by HaveIBeenRansom.
1
found in Infostealer logs
51+
found in Traditional breaches
51+
found in Ransomware leaks
ValeCard
medusa · ransomware
••• emails
Cit0day [cit0day.in] breaches.csv
LKnet reserve chat · breach
••• emails
Hotel Urbano.rar
Anonymous Russia БД · breach
••• emails
vivo_leak.rar
Anonymous Russia БД · breach
••• emails
Pemiblanc_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
Pemiblanc.com - Pemiblanc Credential Stuffing List.part16.rar
@mvddsp Reserv · 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
+ 6 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.