UMass Chan Medical School

UMass Chan Medical School

Data Breach on July 11, 2023
Data Breach Report
Victimumassmed.edu
Claimed ByCL0P
Date DiscoveredJul 11, 2023
DescriptionUMass Chan Medical School was founded in 1962 to provide affordable, high-quality medical education to state residents and to increase the number of primary.
Leak SizeUnknown

Credential Exposure for umassmed.edu

We've indexed 4,298 @umassmed.edu accounts from external breaches, plus 108 credentials for umassmed.edu itself.

Last checked Oct 4, 2026

@umassmed.edu addresses from external breaches
Third-party breaches4,058 accounts · across 404 breaches · 3,551 with a plaintext password · most recent Sep 18, 2026
Combo lists1,884 accounts · most recent Oct 4, 2026
Passwords for umassmed.edu accounts
Combo lists88 logins · most recent Oct 3, 2026
Infostealer logs31 logins · 13 infected devices · most recent Sep 27, 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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