Every public data breach

44 disclosed this week · 26,355 on record

Health Care Service

Disclosed Jun 15, 2021543 affectedConfirmed

Official notice

Health Care Service Corporation, the covered entity (CE), reported that a vendor of its business associate (BA) experienced a cyber-attack that compromised the protected health information (PHI) of 543 individuals. The PHI involved included names, birthdates, diagnoses, claims information, and other treatment information. The CE notified HHS, affected individuals, the media, and posted substitute notice on its website. In its mitigation efforts, the CE and BA implemented additional administrative, technical, and security safeguards to better protect sensitive data. All staff were retrained.

What is known

People affected543 (as reported to HHS)
DisclosedJun 15, 2021
AttackHacking
Data exposedNamesHealth
SectorInsurance · US
StatusConfirmed

Sources

Notices filed

Other breaches at Health Care Service

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.

Everything about Health Care Service