This record tracks a ransomware attack claimed by the
krybit group against
cesmac.edu.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.
-51days
t1 · Published
t2 · Disclosed
Business Category
Education
Published
August 04, 2026
Disclosed / Notified
Jun 14, 2026
Attack Summary
Centro Universitário CESMAC (CESMAC University Center) is the largest private higher education institution in the state...
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 cesmac.edu.br
— indexed by HaveIBeenRansom.
646
found in Infostealer logs
423+
found in Traditional breaches
19+
found in Ransomware leaks
pureincubation-com.7z.001
Database World ROC · breach
••• emails
@BreachedData1 LinkedIn 2021-23 Cleaned.7z.001
Database World ROC · breach
••• emails
Canva_BF_.7z.001
Database World ROC · breach
••• emails
Canva_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
contacts_97.csv
Database World ROC · breach
••• emails
TAPAir_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
contacts_99.csv
Database World ROC · breach
••• emails
contacts_100.csv
Database World ROC · breach
••• emails
+ 17 more leak sources 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.