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53 disclosed this week · 26,385 on record

Jefferson Healthcare

Disclosed Jan 11, 20212,543 affectedConfirmed

Official notice

The covered entity (CE), Jefferson Healthcare, reported that an employee was the victim of an email phishing attack that affected the electronic protected health information (ePHI) of approximately 2,543 individuals. The ePHI involved included names, addresses, dates of birth, drivers’ license numbers, Social Security numbers, financial information, claims information, diagnoses, lab results, medications prescribed, and other treatment information. The CE notified HHS, affected individuals, the media, and provided substitute notice on its website. In response to the breach, the CE implemented additional technical safeguards and retrained its staff on the importance of recognizing and responding to fraudulent email communications and other cybersecurity threats.

What is known

People affected2,543 (as reported to HHS)
DisclosedJan 11, 2021
DiscoveredNov 12, 2020
HappenedNov 9, 2020
AttackPhishing
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

History of this record
data_types2026-09-25
[] to ["names","health"]by backfillSource
records_basis2026-09-25
empty to hhsby backfillSource
records2026-09-25
empty to 2543by backfillSource
summary2026-09-25
empty to The covered entity (CE), Jefferson Healthcare, reported that an employee was the victim of an email phishing attack that affected the electronic protected health information (ePHI) of approximately 2,543 individuals. The ePHI involved incluby backfillSource
Added2026-09-25
First recordedby backfillSource

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

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