UMMC Resumes Operations After Ransomware Attack

Mississippi hospital recovers from nine-day disruption caused by cybercriminals

Published on Mar. 4, 2026

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The University of Mississippi Medical Center (UMMC) recently brought its clinics back online after a nine-day disruption caused by a ransomware attack. This incident, impacting one of the largest healthcare providers in Mississippi, underscores the growing threat to the healthcare industry and highlights the critical need for robust cybersecurity measures.

Why it matters

Healthcare organizations are increasingly targeted by ransomware attacks due to the high value of protected health information (PHI). The UMMC attack demonstrates the significant disruption ransomware can cause to patient care, highlighting the reliance on electronic health record systems and the vulnerability of healthcare providers to cyberattacks.

The details

The ransomware attack, first revealed in late February 2026, forced UMMC to cancel outpatient procedures, ambulatory surgeries, and imaging appointments. However, hospital services and emergency departments remained operational throughout the ordeal. Access to patient records was restored, allowing clinics to resume normal operations on March 2, 2026, with extended hours to address the backlog of appointments.

  • The ransomware attack was first revealed in late February 2026.
  • UMMC clinics resumed normal operations on March 2, 2026.

The players

University of Mississippi Medical Center (UMMC)

One of the largest healthcare providers in Mississippi, operating a network of seven hospitals, 35 clinics, and over 200 telehealth sites.

FBI

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

Cybersecurity and Infrastructure Security Agency (CISA)

A U.S. Federal government agency that helps protect the nation's critical infrastructure, and is working with UMMC on the incident response.

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What they’re saying

“We must not let individuals continue to damage private property in San Francisco.”

— Robert Jenkins, San Francisco resident (San Francisco Chronicle)

What’s next

The judge in the case will decide on Tuesday whether or not to allow Walker Reed Quinn out on bail.

The takeaway

This case highlights growing concerns in the community about repeat offenders released on bail, raising questions about bail reform, public safety on SF streets, and if any special laws to govern autonomous vehicles in residential and commercial areas.