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44 disclosed this week · 26,355 on record

Cornerstone Care

Disclosed Feb 25, 202112,081 affectedConfirmed

Official notice

The covered entity (CE), Cornerstone Care, LLC, reported that an employee was the victim of an email phishing scheme that affected the electronic protected health information (ePHI) of 12,081 individuals. The ePHI involved included names, addresses, dates of birth, diagnoses, health insurance information, Social Security numbers, and other treatment information. As a result of this incident, the CE implemented additional administrative, technical, and security safeguards to better protect its ePHI. In addition, the CE retrained its workforce members on the proper methods of identifying and responding to fraudulent email communications.

What is known

People affected12,081 (as reported to HHS)
DisclosedFeb 25, 2021
AttackHacking
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

History of this record
Added2026-09-25
First recordedby backfillSource

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

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