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United Medical Doctors

insomnia

This record tracks a ransomware attack claimed by the insomnia group against United Medical Doctors. 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.

-81days
t1 · Published t2 · Disclosed
Mar 31, 2026Jan 09, 2026
Country
United States
Business Category
Healthcare / Medicine
Employees
101-1000
Discovered
2026-04-09
Published
March 31, 2026
Disclosed / Notified
Jan 09, 2026
Victim ID
xaqqNtZXR2wS

Attack Summary

United Medical Doctors (UMD) is an independent multi‑specialty medical‑surgical group with 70+ Southern California locations and 40+ specialties. They focus on high‑quality, compassionate care, patient satisfaction, process improvement, outpatient surgery, clinical research.

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.

file_tree.png
finance_2024.xlsx
passport_scan.jpg
contract_signed.pdf
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Dark Web Exposure

Findings for unitedmd.com — indexed by HaveIBeenRansom.
0
found in Infostealer logs
15
found in Traditional breaches
1
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.