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Partners HealthCare System

Disclosed May 1, 20153,321 affectedConfirmed

Official notice

Fifty employees providing unauthorized access to their email accounts as a result of a phishing email sent to 392 employees of Partners HealthCare, the covered entity (CE). Those email accounts contained the protected health information (PHI) of 3,321 individuals and included names, addresses, dates of birth, social security numbers, diagnoses, medications, and other treatment information. The CE provided breach notification to HHS, affected individuals, and the media. Following the breach, the CE strengthened password requirements, implemented two-factor authentication, and conducted additional training and awareness sessions regarding phishing campaigns. OCR obtained assurances that the CE implemented the corrective actions listed above.

What is known

People affected3,321 (as reported to HHS)
DisclosedMay 1, 2015
AttackHacking
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

Other breaches at Partners HealthCare System

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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