University of Mississippi Medical Center (UMMC) hit by ransomware attack
Incident
Summary
Hide ▲
Show ▼
The University of Mississippi Medical Center (UMMC) suffered a ransomware attack that forced all clinic locations statewide to close and disrupted access to Epic electronic medical records. The attack also cancelled outpatient procedures and imaging appointments, creating immediate operational strain across the health system. Hospital care continued through downtime procedures while UMMC investigated with help from CISA and the FBI.
Related Happenings
U.S. sentencing of Deniss Zolotarjovs in Karakurt ransomware case
Law Enforcement
First: 05.05.2026 13:13
Last: 05.05.2026 13:13
Sources 1
About this happening:
**Deniss Zolotarjovs** was **sentenced to 8.5 years in prison** in the **United States** for serving as a **Karakurt ransomware** negotiator, resolving a cross-border cybercrime c...
U.S. sentencing of Deniss Zolotarjovs in Karakurt ransomware case
Law EnforcementAbout this happening: **Deniss Zolotarjovs** was **sentenced to 8.5 years in prison** in the **United States** for serving as a **Karakurt ransomware** negotiator, resolving a cross-border cybercrime c...
U.S. sentencing of Ryan Clifford Goldberg and Kevin Tyler Martin in BlackCat ransomware case
Law Enforcement
First: 01.05.2026 10:47
Last: 01.05.2026 10:47
Sources 1
About this happening:
**Ryan Clifford Goldberg** and **Kevin Tyler Martin**, former employees of **Sygnia** and **DigitalMint**, were sentenced in a **BlackCat (ALPHV) ransomware** law-enforcement case...
U.S. sentencing of Ryan Clifford Goldberg and Kevin Tyler Martin in BlackCat ransomware case
Law EnforcementAbout this happening: **Ryan Clifford Goldberg** and **Kevin Tyler Martin**, former employees of **Sygnia** and **DigitalMint**, were sentenced in a **BlackCat (ALPHV) ransomware** law-enforcement case...
Tampa medical device company hit by ransomware attack linked to BlackCat (ALPHV)
Incident
First: 01.05.2026 10:47
Last: 01.05.2026 10:47
Sources 1
About this happening:
A **Tampa medical device company** suffered a **ransomware intrusion** in **May 2023** that encrypted its servers and triggered a **$10 million** ransom demand. The company later...
Tampa medical device company hit by ransomware attack linked to BlackCat (ALPHV)
IncidentAbout this happening: A **Tampa medical device company** suffered a **ransomware intrusion** in **May 2023** that encrypted its servers and triggered a **$10 million** ransom demand. The company later...
BlackCat campaign expands across multiple victims
Campaign
First: 22.04.2026 14:00
Last: 22.04.2026 14:00
Sources 1
About this happening:
The **BlackCat** ransomware operation ran a **multi-victim extortion campaign** against **US organizations** between **April and November 2023**, creating sustained ransom pressur...
BlackCat campaign expands across multiple victims
CampaignAbout this happening: The **BlackCat** ransomware operation ran a **multi-victim extortion campaign** against **US organizations** between **April and November 2023**, creating sustained ransom pressur...
Latest development: 01.05.2026 14:30
Ryan Goldberg and Kevin Martin were each sentenced to four years in prison for helping the BlackCat/ALPHV ransomware gang conduct attacks against multiple U.S. organizations during 2023. Prosecutors said the pair worked alongside Angelo Martino, paid BlackCat administrators a 20% share of ransom payments, and in one case received a Bitcoin ransom worth $1.2m while also leaking patient data from a healthcare victim.
2025 Cyberattack surge disrupting patient care across U.S. healthcare organizations
Target Trend
First: 03.04.2026 17:05
Last: 03.04.2026 17:05
Sources 1
How related:
According to recent data, 93% of U.S. healthcare organizations experienced at least one cyberattack in 2025, and 72% of respondents reported that at least one incident directly disrupted patient care.
About this happening:
In **2025**, **93% of U.S. healthcare organizations** experienced at least one cyberattack, and **72%** said at least one incident **directly disrupted patient care**. The pattern...
2025 Cyberattack surge disrupting patient care across U.S. healthcare organizations
Target TrendHow related: According to recent data, 93% of U.S. healthcare organizations experienced at least one cyberattack in 2025, and 72% of respondents reported that at least one incident directly disrupted patient care.
About this happening: In **2025**, **93% of U.S. healthcare organizations** experienced at least one cyberattack, and **72%** said at least one incident **directly disrupted patient care**. The pattern...
Timeline
-
20.02.2026 13:50 4 articles · 3mo ago
UMMC clinic closures and Epic disruption
Victim Impact UpdateThe University of Mississippi Medical Center closed all clinic locations statewide, took down many IT systems, blocked access to Epic electronic medical records, cancelled outpatient and ambulatory surgeries/procedures and imaging appointments, and continued hospital services through downtime procedures while assessing the ransomware attack's impact.
Show sources
- Mississippi medical center closes all clinics after ransomware attack — www.bleepingcomputer.com — 20.02.2026 13:50
- University of Mississippi Medical Center Still Offline After Ransomware Attack — www.infosecurity-magazine.com — 23.02.2026 10:30
- Mississippi medical center reopens clinics hit by ransomware attack — www.bleepingcomputer.com — 04.03.2026 17:28
- Evolution of Ransomware: Multi-Extortion Ransomware Attacks — www.bleepingcomputer.com — 03.04.2026 17:05
-
20.02.2026 13:50 2 articles · 3mo ago
UMMC confirms ransomware attack and response
Initial DisclosureUMMC confirmed the ransomware attack on the University of Mississippi Medical Center, said it had activated its Emergency Operations Plan, shut down all network systems as a precaution, and was working with the FBI, Homeland Security, and CISA while evaluating the extent of systems impacted.
Show sources
- Mississippi medical center closes all clinics after ransomware attack — www.bleepingcomputer.com — 20.02.2026 13:50
- Mississippi medical center closes all clinics after ransomware attack — www.bleepingcomputer.com — 20.02.2026 13:50