This record tracks a ransomware attack claimed by the
insomnia group against
Flint Hills Dialysis. It collects the publicly disclosed attack details — sector, location and
timeline — as published on the operator's leak site and indexed by Breach House.
Window Zero
EXPOSURE GAP
Window Zero is the time the breach stayed in the open before
anyone said so — the gap between when the attack was first discovered
on the operator's leak site (t1) and when it was publicly disclosed (t2).
The wider this window, the longer victims, staff and customers were exposed with no warning.
-3days
t1 · Published
t2 · Disclosed
Business Category
Healthcare / Pharma
Published
December 04, 2025
Disclosed / Notified
Dec 01, 2025
Attack Summary
Flint Hills Dialysis focuses on dialysis and chronic kidney disease management, creating personalized treatment plans to improve patients' lives. With clinics in Manhattan and Marysville, Kansas, their team emphasizes patient education and compassionate care.
Leak Screenshots
SAMPLE
Proof-of-breach screenshots the operator posted from the stolen data. Previews are
redacted and locked — the originals are available on HaveIBeenRansom.
Dark Web Exposure
Findings for fhdks.com
— indexed by HaveIBeenRansom.
2
found in Infostealer logs
15
found in Traditional breaches
0
found in Ransomware leaks
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Legal Disclaimer:
This ransomware victim record reflects information published on the operator's leak site.
Breach.house does not acquire, download, host, access or redistribute unlawfully obtained data. It indexes only publicly visible information posted by ransomware, breach and infostealer operators and open web sources, without accessing the underlying stolen content. The service supports public awareness, legitimate research and cyber-resilience.