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Published signals
currently linked to this company
Company intelligence
Umc cybersecurity incidents and threat signals
umc.edu
This company page brings together public reporting currently associated with Umc. It reflects signals published by Shadow Tier and should not be read as a complete incident history.
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Last 28 days
recent published signals
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Last 90 days
recent published signals
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High or critical
confidence classifications
June 25, 2026
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most recent published signal
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Based on all published signals currently linked to Umc. Affected countries come from victim data; the company country above remains a separate profile fact. Counts describe this reporting set, not overall incident prevalence.
Attack patterns
Company signals
All published signals involving Umc
University of Mississippi Medical Center closes clinics after ransomware attack
A ransomware attack crippled the University of Mississippi Medical Center's (UMMC) IT systems, including its electronic health records, on February 20, 2026. This incident forced statewide clinic closures, cancellation of surgeries and appointments, and reliance on manual processes for patient care.
FAQ
Questions about Umc cybersecurity reporting
What does the Umc page include?
It combines a reviewed organization profile with all current published Shadow Tier signals explicitly linked to Umc.
Does every mention of Umc appear here?
No. A signal must contain a reliable company connection and meet the publication criteria; incidental or ambiguous mentions are excluded.
Why can the incident count change?
The page follows current published reporting. Counts change as new evidence is added, classifications are reviewed, or older signals leave the reporting window.