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University of Mississippi Medical Center closes all clinics in wake of cyberattack

Databreaches •Dissent • February 19, 2026

Dysruption Hub reports what sounds like a very serious cyberattack affecting the University of Mississippi Medical Center (UMMC): University of Mississippi Medical Center said a cybersecurity attack knocked multiple IT systems offline Thursday, cutting off access to its Epic electronic medical records platform and prompting the Jackson-based system to close clinics and cancel outpatient care.... Source

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Ransomware Attack Disrupts University of Mississippi Medical Center Operations The University of Mississippi Medical Center (UMMC) experienced a ransomware attack that compromised its IT systems, leading to the closure of clinics statewide. UMMC officials confirmed the incident occurred on Thursday, prompting the cancellation of appointments and disruption of services. 76 sources 79

University of Mississippi Medical Center closes all clinics in wake of cyberattack

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