Ransomware Leak
medusa
Universitas Matthiae Belii association
Data leak attributed to medusa, first discovered on 2023-06-25. Approximately 136,650 records were reported exposed.
Threat group
medusa
Records exposed
136,650
Discovered
2023-06-25
Country
Unknown
Indexed
2025-07-17
Website
umb.sk
Source ID
7015
About this leak
Matej Bel University (commonly referred as Matej Bel or UMB), (Slovak: Univerzita Mateja Bela) is a public research university in the central Slovak town of Banská Bystrica. The university was established in 1992. At the moment, more than 6,000 students are studying at the university.
What is inside this leak sample
Indexed records
136,650
With email
•••
ID documents
•••
File types
•••
Corporate vs personal email
80.36% corporate · 19.64% personal
Top corporate email domains
% of corporate emails
umb.sk
25.9%
umb.studentlive.sk
21.43%
6 more hidden ·
Enterprise
Analysed 2026-09-01
More leaks attributed to medusa
Worried your information is in this or another leak?
Run a free, anonymous search
across millions of ransomware and infostealer records.