Matej Bel University

Matej Bel University

Data Breach on June 26, 2023
Data Breach Report
Victimumb.sk
Claimed ByMedusa
Date DiscoveredJun 26, 2023
DescriptionMatej 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.
Leak SizeUnknown

Credential Exposure for umb.sk

We've indexed 916 @umb.sk accounts from external breaches, plus 944 credentials for umb.sk itself.

Last checked Sep 27, 2026

@umb.sk addresses from external breaches
Combo lists653 accounts · most recent Sep 26, 2026
Third-party breaches494 accounts · across 131 breaches · 437 with a plaintext password · most recent Oct 10, 2024
Passwords for umb.sk accounts
Combo lists795 logins · most recent Sep 25, 2026
Infostealer logs299 logins · 130 infected devices · most recent Sep 22, 2026

Logins may belong to customers or to staff, and the data doesn't say which. None of this is necessarily connected to the ransomware attack above.

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