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Health Care Service

Disclosed Apr 24, 20197 years ago1,182 affectedConfirmed

Official notice

The covered entity (CE), Health Care Service Corporation, reported that an employee inadvertently emailed a document containing the electronic protected health information (ePHI) of 574 individuals to an unauthorized individual. The ePHI involved included names, member identification numbers, diagnoses, medications prescribed, and other treatment information. The CE notified HHS and the affected individuals. In response to the breach, the CE implemented additional administrative safeguards and retrained employees on the requirement to safeguard sensitive data. OCR obtained assurances that the CE implemented the corrective actions noted.

What is known

People affected1,182 (as reported to HHS)
DisclosedApr 24, 2019
HappenedAug 16, 2019
AttackInsider
Data exposedNames, Health
SectorHealthcare · US
StatusConfirmed

Sources

Source
Indiana Attorney General 2020 data breach report: Health Care Servicein.gov · Official notice
HHS OCR breach report (archive, resolved): Health Care Service (Health Plan, IL)ocrportal.hhs.gov · Official notice

Notices filed

WhereFiledPeople
HHS archivetotalApr 24, 20191,182
HHS archivetotalSep 6, 2019998
Indiana AGresidents of INFeb 20, 20201
HHS archivetotalMar 23, 2020574

Other breaches at Health Care Service

BreachAffected
Disclosed Apr 13, 2025Apr 13, 20251 year agoInsider2,944
Disclosed Aug 21, 2023Aug 21, 20233 years agoHacking221K
Disclosed Jun 15, 2021Jun 15, 20215 years agoHacking543
Disclosed Jun 4, 2018Jun 4, 20188 years ago161
Disclosed Mar 27, 2015Mar 27, 201511 years agoLost or stolen device501
Disclosed Oct 26, 2012Oct 26, 201213 years agoLost or stolen device501
Disclosed Jul 28, 2011Jul 28, 201115 years agoLost or stolen device501
History of this record
  • 2026-09-25 · records: 998 to 1182 · backfill source
  • 2026-09-25 · disclosed: 2019-09-06 to 2019-04-24 · backfill source
  • 2026-09-25 · records: 574 to 998 · backfill source
  • 2026-09-25 · disclosed: 2020-02-20 to 2019-09-06 · backfill source
  • 2026-09-25 · attack: unknown to insider · backfill source
  • 2026-09-25 · data_types: [] to ["names","health"] · backfill source
  • 2026-09-25 · records_basis: organization to hhs · backfill source
  • 2026-09-25 · records: 6 to 574 · backfill source
  • 2026-09-25 · summary: empty to The covered entity (CE), Health Care Service Corporation, reported that an employee inadvertently emailed a document containing the electronic protected health information (ePHI) of 574 individuals to an unauthorized individual. The ePHI in · backfill source
  • 2026-09-25 · added · backfill source

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

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