University of Mississippi Medical Center Ransomware Attack Disrupts Epic EHR and Statewide Clinics

The University of Mississippi Medical Center (UMMC) restored normal operations after a major ransomware attack that disrupted IT systems for roughly nine days, including loss of access to electronic medical records and impacts to patient care across the state. The incident forced UMMC to cancel outpatient procedures, ambulatory surgeries, and imaging appointments, while hospitals and emergency departments continued operating using manual downtime procedures; phone communications were also affected.

UMMC reported restoring access to patient records and reopening clinics with extended hours to address the backlog. Officials said they were communicating with the attackers and working with the FBI and CISA during the response and investigation. As of the latest reporting, no ransomware group has claimed responsibility, and there was no confirmed evidence of data exfiltration disclosed in official statements.