This record tracks a ransomware attack claimed by the
medusa group against
Atrium Living Centers. 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.
296days open
t1 · Published
t2 · Pending
Business Category
Healthcare / Pharma
Published
November 08, 2025
Disclosed / Notified
Not disclosed yet
Attack Summary
Atrium Living Centers is a 100% employee-owned company providing skilled nursing, rehabilitation, and long-term care services. The organization is dedicated to delivering compassionate, high-quality healthcare to residents while promoting dignity, respect, and community involvement. With a strong focus on personalized treatment, Atrium Living Centers offers both short-term post-acute rehabilitation and long-term nursing care. Their mission is to “be a light in the lives of our residents and families,” ensuring comfort and well-being in a supportive environment. The company operates multiple care centers across several U.S. states, including Ohio, Michigan, Kentucky, and Wisconsin.
company is headquartered in Atrium Living Centers headquarters is located at 2550 Corporate Exchange Drive, Suite 200, Columbus, Ohio 43231, United States.
2,000 Employees
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 atriumlivingcenters.com
— indexed by HaveIBeenRansom.
2
found in Infostealer logs
1,072+
found in Traditional breaches
127+
found in Ransomware leaks
VerificationsIO_BF.7z.011
Kedr | Forum · breach
••• emails
pureincubation-com.7z.001
Database World ROC · breach
••• emails
limeleads_breach.7z
TheUnderground - Reborn · breach
••• emails
Arandell Corp
medusa · ransomware
••• emails
Apollo.io DB 816millions.rar
Database World ROC · breach
••• emails
Database World ROC · breach
••• emails
B F R e p o V 3 F i l e s · breach
••• emails
B F R e p o V 3 F i l e s · breach
••• emails
+ 17 more leak sources locked
Leak volumes are locked
Sign in to reveal how many records each source exposed and the remaining 20 sources.
Legal Disclaimer:
This ransomware victim record reflects information published on the operator's leak site.
Breach.house only records what the operators themselves publish in the
open. We take screenshots of their public pages and keep the proof
material they post there, so that a listing can be verified and its status
tracked over time. We do not purchase data, we do not solicit or encourage
its publication, we do not access any private system, and we do not alter
anything we record. Nothing is offered for download here, and detailed
content is not published on this page or anywhere else on the public site:
access to it is restricted to vetted customers under contract, for
incident response, due diligence and cyber-resilience work.
Breach.house is not affiliated with, and does not act on behalf of, the
operators who publish this material. If you represent an organisation or
individual named here and want a record reviewed or removed, contact us
and we will act on it.