University of Mississippi Medical Center Clinics Remain Closed After Cyber Attack

Ransomware attack forces cancellation of elective surgeries and clinic closures statewide.

Published on Feb. 24, 2026

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University of Mississippi Medical Center clinics will remain closed statewide through Wednesday, Feb. 25, nearly a week after a major ransomware attack devastated operations, including forcing the cancellation of elective surgeries and shuttering clinics statewide. UMMC announced the continued closures on Monday, noting that hospitals and emergency departments in Jackson, Grenada, Madison County and Holmes County remain open.

Why it matters

The ransomware attack on UMMC has disrupted critical medical services across Mississippi, forcing the closure of clinics and cancellation of elective surgeries. This highlights the vulnerability of healthcare systems to cyber threats and the potential for significant impacts on patient care when such attacks occur.

The details

UMMC has set up a triage line for patients with time-sensitive needs, such as medication refills or postoperative care visits. The FBI is investigating the source of the cyber attack, which has forced the medical center to work around the clock to restore full operations.

  • On Monday, February 24, 2026, UMMC announced the continued clinic closures through Wednesday, February 25.
  • The ransomware attack occurred nearly a week prior to the announcement of the continued closures.

The players

University of Mississippi Medical Center

A major academic medical center and healthcare system in Mississippi, providing a wide range of medical services and operating clinics statewide.

FBI

The Federal Bureau of Investigation, which is investigating the source of the ransomware attack on UMMC.

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What’s next

The FBI is investigating the source of the cyber attack, and UMMC is working to restore full operations as quickly as possible.

The takeaway

The ransomware attack on UMMC highlights the critical importance of healthcare systems being prepared for and resilient to cyber threats, which can have significant impacts on patient care and access to medical services.