University of Mississippi Medical Center (“UMMC”)

University of Mississippi Medical Center (“UMMC”) notified California AG on Nov 2, 2026 of a data breach, which occurred on Feb 19, 2026. Data exposed: Medical / health information.

Organization: University of Mississippi Medical Center (“UMMC”)
Source: California AG · source record
Date reported: Nov 2, 2026
Date(s) of breach: Wednesday, February 11, 2026Thursday, February 19, 2026
Residents affected: Not published by this source
Data exposed: Medical / health information
Notice letter: Sample notice (PDF)
First seen by BreachTally: 2026-11-03 17:01 UTC

Dates and counts as filed by the organization with the agency. The breach window and the report date often differ by months.

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