Every public data breach

Disclosed this week44On record26,355

44 disclosed this week · 26,355 on record

Mainline Health Systems

Disclosed Jun 23, 2025101,104 affectedConfirmed

Official notice

What is known

People affected101,104 (as reported to HHS)
DisclosedJun 23, 2025
AttackHacking
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Official noticeocrportal.hhs.gov
HHS OCR breach report: Mainline Health Systems (Healthcare Provider, AR)

Notices filed

TotalJun 23, 2025
HHS OCR101,104 people
History of this record
Added2026-09-25
First recordedby backfillSource

First seen 2026-09-25 (HHS OCR), confirmed by HHS OCR. Record counts are as reported. Not legal advice.

Everything about Mainline Health Systems