Every public data breach

44 disclosed this week · 26,355 on record

One Brooklyn Health System

Disclosed Jan 18, 2023235,251 affectedConfirmed

Official notice

One Brooklyn Health (the covered entity (CE), reported that it experienced a hacking attack that compromised the protected health information (PHI) of 211,347 individuals. The PHI involved included names, dates of birth, addresses, diagnoses, medical records numbers, medications, and health insurance information. The CE notified HHS, impacted individuals, and the media. In its mitigation efforts, the CE implemented additional administrative, technical, and security safeguards to better protect its sensitive data. OCR provided technical assistance regarding the HIPAA Rules.

What is known

People affected235,251 (as reported by the organization)
DisclosedJan 18, 2023
HappenedJul 9, 2022
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
disclosed2026-09-25
2023-04-20 to 2023-01-18by backfillSource
summary2026-09-25
empty to One Brooklyn Health (the covered entity (CE), reported that it experienced a hacking attack that compromised the protected health information (PHI) of 211,347 individuals. The PHI involved included names, dates of birth, addresses, diagnoseby backfillSource
Added2026-09-25
First recordedby backfillSource

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

Everything about One Brooklyn Health System