Flint Hills Dialysis Listed by insomnia Ransomware Group: Ransomware Claim — What’s Alleged & What To Do
Flint Hills Dialysis has been listed by the insomnia ransomware group after internal files were taken in a ransomware attack. The incident was disclosed on 04 December 2025; the number of individuals affected has not been released. Anyone who has received services from the organisation should check for official notices and review their accounts for unusual activity.
What happened
The incident centers on a listing posted by the insomnia ransomware group on December 04, 2025. The entry states that internal files were exfiltrated from Flint Hills Dialysis. No further details on the timing of the intrusion, the method of access, the volume of data, or any ransom demand have been disclosed. The scale of exposure, including how many individuals’ records may be involved, is also not reported.
Inside insomnia
Insomnia is a ransomware group that maintains a public leak site where it lists organizations it claims to have targeted. Such groups commonly employ double-extortion tactics, first encrypting systems and then threatening to release stolen files if payment is not received. Listings on these sites represent the group’s assertions rather than independently verified events. The group has appeared in prior public reporting involving healthcare and other sectors, though specifics tied to this listing remain limited to the claim itself.
About Flint Hills Dialysis
Flint Hills Dialysis operates clinics in Manhattan and Marysville, Kansas, providing dialysis services and management of chronic kidney disease. The organization develops individualized treatment plans and emphasizes patient education alongside routine clinical care. Entities in this sector routinely collect and store detailed health records, insurance information, and contact details required for ongoing treatment coordination.
What was likely exposed
The listing describes internal files taken during the ransomware operation. The precise categories of information contained in those files have not been disclosed. Organizations of this type typically maintain patient identifiers, medical histories, treatment records, and administrative documents; however, the exact contents remain unconfirmed beyond the general reference to internal files.
What's at stake
Medical and personal data held by dialysis providers can include sensitive health details that, if disclosed, may affect privacy, insurance eligibility, or future care decisions. For the organization, the incident adds operational and regulatory considerations common to healthcare entities handling protected information. The absence of Reported Details on the data’s scope leaves the full extent of potential impact undetermined at this stage.
What to do if you're exposed
Individuals who receive notification from Flint Hills Dialysis or suspect their information may be involved should monitor statements from the provider and follow any guidance it issues. Standard steps include reviewing account statements for unusual activity, placing fraud alerts with credit bureaus if financial details are at risk, and using strong, unique passwords with multi-factor authentication. Readers can run a free exposure scan of their email address against known breach data to check for prior appearances in public records.
AICompiled with AI assistance from public sources and published under our editorial standards.
How this breach connects
More recent breaches
Optimum Health Institute Listed by insomnia Ransomware GroupSchureMed Listed by insomnia Ransomware GroupTri-Cities Gastroenterology Listed by insomnia Ransomware GroupSouthern Illinois Dermatology Listed by insomnia Ransomware GroupLatest breaches
Read GalaxyWarden’s full analysis of the Flint Hills Dialysis Listed by insomnia Ransomware Group →
Publicly posted by insomnia — unverified claim, pending independent verification
Breach listings — particularly those originating from ransomware or leak sites — are third-party claims that may be unverified, incomplete, or inaccurate. A listing does not by itself confirm that a breach occurred or that any specific data was exposed. Severity is an automated assessment, not a definitive rating. Verification status is shown where available.
Attributions to threat groups and methods reflect public reporting and, in some cases, unverified claims made by the groups themselves; they may be incomplete or later revised. Recent Breaches and GalaxyWarden are independent and are not affiliated with, and do not endorse, any company or group named on this page. This information is aggregated from public sources for awareness only and is not legal, security, or investment advice.