Every public data breach

47 disclosed this week · 26,367 on record

Maestro Health

Disclosed Apr 6, 202118,488 affectedConfirmed

Official notice

The business associate (BA), Maestro Health, reported that several employees were the victims of an email phishing attack affecting the protected health information (PHI) of 18,488 individuals. The PHI involved included names, dates of birth, addresses, and Social Security numbers. The BA notified HHS, affected individuals, and the media. In response to the breach, the BA implemented additional administrative, technical, and security safeguards, revised its policies and procedures, retrained its employees on email security, and provided affected individuals with credit monitoring services. OCR provided technical assistance to the BA regarding the HIPAA Rules.

What is known

People affected18,488 (as reported to HHS)
DisclosedApr 6, 2021
AttackHacking
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

Other breaches at Maestro Health

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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