Cybersecurity Attack Forces UMMC to Close Clinics, Cancel Procedures

Medical center says IT systems, including electronic records, taken offline by incident

Published on Feb. 24, 2026

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The University of Mississippi Medical Center announced that a cybersecurity attack has taken many of its information technology systems offline, including access to its electronic medical records system. As a result, UMMC has closed all of its clinic locations statewide for the day and canceled outpatient and ambulatory surgeries, procedures, and imaging appointments.

Why it matters

Cybersecurity incidents can have significant impacts on healthcare providers, disrupting critical operations and patient care. This attack on UMMC highlights the ongoing threat healthcare organizations face from malicious actors seeking to disrupt services or gain unauthorized access to sensitive data.

The details

UMMC said the cybersecurity attack has taken its Epic electronic medical records system and other IT systems offline. The medical center is continuing hospital services using downtime procedures while it works to restore its systems and provide updates on the situation.

  • The cybersecurity attack occurred on February 19, 2026.
  • UMMC announced the incident and closures in a public notice dated February 19, 2026.

The players

University of Mississippi Medical Center

A major academic medical center and healthcare provider in Mississippi.

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What’s next

UMMC has not provided a timeline for when its systems and services will be restored, but the medical center says it is working to resolve the cybersecurity incident and resume normal operations.

The takeaway

This attack on a major healthcare provider underscores the critical importance of robust cybersecurity measures to protect sensitive patient data and ensure the continuity of essential medical services.