Every public data breach

MCS

Disclosed Feb 2, 20268 months ago3,478 affectedConfirmed

Official notice

What is known

People affected3,478 (as reported to HHS)
DisclosedFeb 2, 2026
AttackHacking
Data exposedNames, Health
SectorHealthcare · US
StatusConfirmed

Sources

Official noticeocrportal.hhs.gov
HHS OCR breach report (archive, resolved): MCS (Business Associate, MD)

Notices filed

TotalFeb 2
HHS archive3,478 people
History of this record
Added2026-10-14
First recordedby weeklySource

First seen 2026-10-14 (HHS archive), confirmed by HHS OCR. Record counts are as reported. Not legal advice.

Everything about MCS