This record tracks a ransomware attack claimed by the
thegentlemen group against
Devereux Advanced Behavioral Health. 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.
-75days
t1 · Published
t2 · Disclosed
Business Category
Healthcare / Pharma
Published
November 28, 2025
Disclosed / Notified
Sep 15, 2025
Attack Summary
www.devereux.org https://www.zoominfo.com/c/the-devereux-foundation/60082215 Devereux Advanced Behavioral Health, headquartered in Villanova, Pennsylvania, is a behavioral healthcare organization that operates a network of clinical, therapeutic, educational, and employment programs.
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 devereux.org
— indexed by HaveIBeenRansom.
29
found in Infostealer logs
2,899+
found in Traditional breaches
101+
found in Ransomware leaks
limeleads_breach.7z
TheUnderground - Reborn · breach
••• emails
VerificationsIO_BF.7z.011
Kedr | Forum · breach
••• emails
Apollo.io DB 816millions.rar
Database World ROC · breach
••• emails
pureincubation-com.7z.001
Database World ROC · breach
••• emails
@BreachedData1 LinkedIn 2021-23 Cleaned.7z.001
Database World ROC · breach
••• emails
CSCGLOBAL.COM
clop · ransomware
••• emails
Exploit.in.rar
LKnet reserve chat · breach
••• emails
Televerde
play · ransomware
••• emails
+ 17 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.