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Cornerstones of Care

Disclosed Nov 12, 20205 years ago15,680 affectedConfirmed

Official notice

The covered entity (CE), Cornerstones of Care, reported that its business associate (BA) experienced a ransomware attack affecting the electronic protected health information (ePHI) of approximately 15,680 individuals. The ePHI involved included names, addresses, dates of birth, Social Security numbers, and treatment information. The CE notified HHS, affected individuals, the media, and provided substitute notice.

What is known

People affected15,680 (as reported to HHS)
DisclosedNov 12, 2020
AttackHacking
Data exposedNames, Health
SectorHealthcare · US
StatusConfirmed

Sources

Source
HHS OCR breach report (archive, resolved): Cornerstones of Care (Healthcare Provider, MO)ocrportal.hhs.gov · Official notice

Notices filed

WhereFiledPeople
HHS archivetotalNov 12, 202015,680

Other breaches at Cornerstones of Care

BreachAffected
Disclosed Feb 14, 2025Feb 14, 20251 year agoHacking2,771
History of this record
  • 2026-09-25 · added · backfill source

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

Everything about Cornerstones of Care

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