Ransomware attack shuts down University of Mississippi Medical Center network, forces ...

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Ransomware attack shuts down University of Mississippi Medical Center network, forces ...

Teiss • February 20, 2026

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Ransomware attacks involve malicious software that encrypts data and systems, rendering them inaccessible until a ransom is paid, often in ...

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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

Extracted Entities

Attack Types (1)

Companies (1)

University Of Mississippi Medical Center

MITRE ATT&CK (1)

T1486 - Data Encrypted for Impact