This record tracks a ransomware attack claimed by the
8base group against
Artconta - Contabilidade e. Assistência Fiscal. 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.
1208days open
t1 · Published
t2 · Pending
Published
February 24, 2023
Disclosed / Notified
Not disclosed yet
Attack Summary
https://www.artconta.com.br/https://www.facebook.com/artconta/?locale=pt_BRArtconta - Contabilidade e. Assistência FiscalAccountants
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 artconta.com.br
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
11
found in Traditional breaches
2
found in Ransomware leaks
MyHeritage_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
Hotel Urbano.rar
Anonymous Russia БД · breach
••• emails
Exploit.in.rar
LKnet reserve chat · breach
••• emails
@BreachedData1 LinkedIn 2021-23 Cleaned.7z.001
Database World ROC · breach
••• emails
Marisa S.A
medusa · ransomware
••• emails
VerificationsIO_BF.7z.011
Kedr | Forum · breach
••• emails
Vivara
medusa · ransomware
••• emails
+ 2 more leak sources locked
Leak volumes are locked
Sign in to reveal how many records each source exposed and the remaining 5 sources.
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.