This record tracks a ransomware attack claimed by the
lockbit3 group against
umchealth.com. 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.
-71days
t1 · Published
t2 · Disclosed
Business Category
Healthcare / Pharma
Published
August 17, 2023
Disclosed / Notified
Jun 08, 2023
Attack Summary
At United Medical Centers we continually strive to provide the highest quality, affordable, and accessible healthcare services to residents of Eagle Pass, Del Rio, Brackettville and surrounding communities. With nine (9) locations, we proudly serve t...
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 umchealth.com
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
165+
found in Traditional breaches
0+
found in Ransomware leaks
VerificationsIO_BF.7z.011
Kedr | Forum · breach
••• emails
limeleads_breach.7z
TheUnderground - Reborn · breach
••• emails
pureincubation-com.7z.001
Database World ROC · breach
••• emails
contacts_2.csv
Database World ROC · breach
••• emails
ModernBusinessSolutions_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
Cit0day [cit0day.in] breaches.csv
LKnet reserve chat · breach
••• emails
MGM_Grand_Hotels RUTOR.7z
TheUnderground - Reborn · breach
••• emails
Leaked Database Archive_2.7z.001
formaceft_db · breach
••• emails
+ 5 more leak sources locked
Leak volumes are locked
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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.