Every public data breach

44 disclosed this week · 26,355 on record

Citywide Health Plan

Disclosed Mar 24, 2021718 affectedConfirmed

Official notice

The covered entity (CE), Citywide Health Plan, reported that it experienced a ransomware attack that compromised the protected health information (PHI) of 718 individuals. The PHI involved included names, addresses, financial and claims information, dates of birth, Social Security numbers, and diagnoses. The CE notified HHS, affected individuals, and the media. In its mitigation efforts, the CE provided complimentary identity monitoring services and implemented additional technical safeguards. OCR provided technical assistance to the CE.

What is known

People affected718 (as reported to HHS)
DisclosedMar 24, 2021
AttackHacking
Data exposedNamesHealth
SectorInsurance · 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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