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University of Mississippi Medical Center (“UMMC”): data breach filings, state by state

University of Mississippi Medical Center (“UMMC”) has 3 data breach filings on record in 3 government portals. The latest was reported to Massachusetts OCABR on Nov 3, 2026, with 64 Massachusetts residents. Data exposed, as filed: Social Security number, Medical / health information, Financial / bank account, Driver's license / state ID.

81residents counted in 2 states (MA, VT). Latest filing per state, last twelve months
3filings in 3 government portals
Nov 3, 2026latest filing, Massachusetts OCABR

By portal

PortalFilingsLatest reportPeople in the latest filing
Massachusetts OCABR1Nov 3, 202664 Massachusetts residents
Vermont AG1Nov 2, 202617 Vermont residents
California AG1Nov 2, 2026Not published

Counts are the organization's own, as filed with each agency. Most state portals count their own residents only, so no single state shows the whole incident. An organization can file more than once for the same incident, and for different ones.

The next state to file on University of Mississippi Medical Center (“UMMC”) reaches subscribers within the hour. With the count, the data exposed and the letter. The Team plan follows the companies and vendors you name in every state. Start a 14-day free trial.
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Every filing

OrganizationSourceStateReportedResidents affectedData exposed
University of Mississippi Medical Center (“UMMC”) Massachusetts OCABR MA Nov 3, 2026 64 Social Security numberMedical / health informationFinancial / bank accountDriver's license / state ID
University of Mississippi Medical Center (UMMC) Vermont AG VT Nov 2, 2026 17 Social Security numberFinancial / bank accountMedical / health information
University of Mississippi Medical Center (“UMMC”) California AG CA Nov 2, 2026 Not published Medical / health information

Data reproduced from public government filings. Each row opens the record with the agency link. Spot an error? Email support@breachtally.com with the page link. Corrections are applied and noted.