This record tracks a ransomware attack claimed by the
medusa group against
Universidade Municipal de São Caetano. 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.
281days open
t1 · Published
t2 · Pending
Business Category
Education
Published
November 24, 2025
Disclosed / Notified
Not disclosed yet
Attack Summary
USCS offers a diverse range of educational programs including in-person and distance learning undergraduate degrees, technical courses, and postgraduate studies such as MBAs and doctorates. The university also provides non-degree courses aimed at skill enhancement and is equipped with facilities for secondary education. Services include free legal assistance, fiscal education, and health services, catering to both students and the community. With a focus on quality and flexibility, USCS serves a wide array of clients including students at various academic levels and professionals seeking further education.
company is headquartered in Rua Santo Antônio, 50 – Centro, São Caetano do Sul, SP, CEP 09521-160.
501-1,000 Employees,
Leak Screenshots
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Dark Web Exposure
Findings for uscs.edu.br
— indexed by HaveIBeenRansom.
325
found in Infostealer logs
369+
found in Traditional breaches
9+
found in Ransomware leaks
Apollo.io DB 816millions.rar
Database World ROC · breach
••• emails
@BreachedData1 LinkedIn 2021-23 Cleaned.7z.001
Database World ROC · breach
••• emails
EstanteVirtual_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
linkedIN_2.7z.001
Database World ROC · breach
••• emails
VerificationsIO_BF.7z.011
Kedr | Forum · breach
••• emails
Database World ROC · breach
••• emails
LKnet reserve chat · breach
••• emails
Database World ROC · breach
••• emails
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