Last mentioned: Feb 23, 2026
Extended Disruption
Clinics remain closed for a second day as forensic teams work to assess the scope of the encryption.
Statewide Shutdown
UMMC announces the closure of 36 clinics and the cancellation of all elective procedures to contain the threat.
Initial Breach Detection
UMMC IT staff identify unauthorized activity and ransomware deployment on the network.
Public Disclosure
UMMC confirms the incident is a ransomware attack and begins forensic investigation.
Attack Detected
UMMC IT staff identify unauthorized activity and begin isolating systems.
Statewide Closure
All UMMC-affiliated clinics are ordered to close immediately to contain the threat.
The University of Mississippi Medical Center has shuttered approximately 36 clinics and canceled elective procedures following a major ransomware attack. The disruption, entering its second day, highlights the critical vulnerability of regional healthcare infrastructure to digital extortion.
A major ransomware attack has forced the University of Mississippi Medical Center to shutter nearly three dozen clinics and suspend elective procedures statewide. The disruption highlights the ongoing vulnerability of critical regional healthcare infrastructure to sophisticated cyber threats.
The University of Mississippi Medical Center (UMMC) has suspended operations across its entire clinic network following a disruptive ransomware attack. The shutdown highlights the critical vulnerability of academic medical centers and the extreme measures required to contain modern cyber threats.
The University of Mississippi Medical Center (UMMC) has suspended operations across its entire network of clinics following a disruptive ransomware attack. The incident has forced the state's only academic medical center to transition to manual processes and divert non-emergency patients, highlighting the persistent vulnerability of critical healthcare infrastructure.