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Episource

Disclosed Jun 2, 20233 years ago23,557 affectedConfirmed

Official notice

The business associate (BA), Episource, reported that it experienced a cyber-attack that compromised the protected health information (PHI) of 23,557 individuals. The PHI involved included names, dates of birth, addresses, phone numbers, medical record numbers, health insurance information, diagnoses, medications, lab results, and other treatment information. The BA notified HHS, the affected individuals, the media, and provided substitute notice. In response to the breach, the BA provided complimentary credit monitoring services and implemented additional administrative, technical, and security safeguards.

What is known

People affected23,557 (as reported to HHS)
DisclosedJun 2, 2023
DiscoveredFeb 20, 2023
HappenedFeb 19, 2023
AttackHacking
Data exposedNames, Health
SectorHealthcare · US
StatusConfirmed

Sources

Source
California Attorney General breach notice: EpiSourceoag.ca.gov · Official notice
Oregon DOJ breach notice: EpiSourcejustice.oregon.gov · Official notice
HHS OCR breach report (archive, resolved): Episource (Business Associate, MN)ocrportal.hhs.gov · Official notice

Notices filed

WhereFiledPeople
California AGresidents of CAJun 2, 2023
HHS archivetotalJun 2, 202323,557
Oregon DOJresidents of ORJun 9, 202323,557

Other breaches at Episource

BreachAffected
Ransomware attack on Episource exposes health data of 6.7 millionJun 6, 20251 year agoRansomware6.7M
History of this record
  • 2026-09-25 · attack: unknown to hacking · backfill source
  • 2026-09-25 · data_types: [] to ["names","health"] · backfill source
  • 2026-09-25 · records_basis: empty to hhs · backfill source
  • 2026-09-25 · records: empty to 23557 · backfill source
  • 2026-09-25 · summary: empty to The business associate (BA), Episource, reported that it experienced a cyber-attack that compromised the protected health information (PHI) of 23,557 individuals. The PHI involved included names, dates of birth, addresses, phone numbers, me · backfill source
  • 2026-09-25 · sector: other to health · backfill source
  • 2026-09-25 · discovered: empty to 2023-02-20 · backfill source
  • 2026-09-25 · added · backfill source

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

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