Every public data breach

47 disclosed this week · 26,367 on record

Deanco Healthcare

Disclosed Jun 30, 2023269,847 affectedConfirmed

Official notice

The covered entity (CE), Deanco Healthcare dba Mission Community Hospital, reported that it experienced a ransomware incident that affected the protected health information (PHI) of 269,847 individuals. The PHI involved included names, dates of birth, drivers’ license information, Social Security numbers, claims information, diagnoses, medications, and other treatment information. The CE notified HHS, affected individuals, the media, and posted substitute notice on its website. In response to the breach, the CE offered free credit monitoring to affected individuals and implemented additional technical safeguards to better protect its PHI. OCR provided technical assistance regarding the HIPAA Rules.

What is known

People affected269,847 (as reported to HHS)
DisclosedJun 30, 2023
HappenedMay 1, 2023
AttackHacking
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

History of this record
attack2026-09-25
unknown to hackingby backfillSource
data_types2026-09-25
[] to ["names","health"]by backfillSource
records_basis2026-09-25
empty to hhsby backfillSource
records2026-09-25
empty to 269847by backfillSource
disclosed2026-09-25
2023-11-21 to 2023-06-30by backfillSource
summary2026-09-25
empty to The covered entity (CE), Deanco Healthcare dba Mission Community Hospital, reported that it experienced a ransomware incident that affected the protected health information (PHI) of 269,847 individuals. The PHI involved included names, dateby backfillSource
Added2026-09-25
First recordedby backfillSource

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

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