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Incident

Midwest Transplant Network

Incident posture

Attack window
Feb 2021
Location
United States of America
Status
Historical
CIA posture
Available to members
Updated
2025-10-27 00:00

Linked entities

Victim
Midwest Transplant Network
Threat actors
0 actors
Sources
1 source

Timeline

Occurred
Feb 2021
Discovered
Pending
Disclosed
Pending
Resolved
Pending

Summary

A ransomware attack targeted Midwest Transplant Network, compromising data of over 17,000 organ, eye, and tissue donors and temporarily locking the organization out of its systems before access was restored. The attackers’ identity remained undisclosed, and while the network stated it had no evidence indicating stolen data was sold or distributed, it engaged cybersecurity firm Kroll to assist affected individuals. The entity declined to confirm whether a ransom was paid to resolve the incident.

Motives

Detailed motive labels are available to members.

1 motive

TTPs

Detailed technique labels are available to members.

1 technique

Description

In February 2021, Midwest Transplant Network experienced a ransomware attack that temporarily locked the organization out of its files. The malicious cyber incident affected personal information belonging to more than 17,000 families of organ, eye, and tissue donors. The network regained access to its systems after a brief disruption but confirmed unauthorized actors had obtained data during the breach. By the week of February 1, 2021, the organization began notifying impacted individuals through mailed letters disclosing the compromise. While operational functions were restored, the attack exposed sensitive donor-related information whose exact nature was not detailed in public communications.

Midwest Transplant Network declined to answer media inquiries about whether it paid ransom to the unidentified attackers. Officials stated they had "no reason to believe" the cybercriminals sold or distributed the stolen data but provided no evidentiary basis for this assertion. As a precautionary measure, the organization contracted cybersecurity firm Kroll to manage inquiries and support affected individuals. The breach did not appear on any known ransomware leak sites at the time of reporting, though this did not confirm whether data deletion or non-disclosure agreements were part of any resolution. No disruptions to transplant operations or clinical systems were reported as a direct consequence of the incident.

Sources

Sources available to members: 1 source.

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