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Torrance Memorial Medical Center

Disclosed Jun 19, 20179 years ago46,632 affectedConfirmed

Official notice

The covered entity (CE) reported that two workforce members responded to a phishing email which resulted in a breach of protected health information (PHI). The breach affected 44,960 individuals and included names, addresses, dates of birth, health care claims information, diagnoses, medications, other treatment information, and 3,304 social security numbers. The CE provided breach notification to HHS, affected individuals and the media. Following the breach, the CE took a number of steps to strengthen its administrative and technical safeguards. It increased its security training and enhanced authentication procedures and technical measures to identify and remove malicious emails. OCR’s investigation resulted in the CE improving its practices in safeguarding PHI.

What is known

People affected46,632 (as reported to HHS)
DisclosedJun 19, 2017
HappenedApr 18, 2017
AttackHacking
Data exposedNames, Social Security numbers, Health
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

WhereFiledPeople
California AGresidents of CAJun 19, 2017
Indiana AGresidents of INJun 19, 201711
Maine AGresidents of MEJun 19, 20172
HHS archivetotalJun 19, 201746,632

Other breaches at Torrance Memorial Medical Center

BreachAffected
Disclosed Mar 6, 2020Mar 6, 20206 years agoHacking3,498
History of this record
  • 2026-09-25 · attack: unknown to hacking · backfill source
  • 2026-09-25 · data_types: ["names","ssn"] to ["names","ssn","health"] · backfill source
  • 2026-09-25 · records_basis: organization to hhs · backfill source
  • 2026-09-25 · records: 32499 to 46632 · backfill source
  • 2026-09-25 · summary: empty to The covered entity (CE) reported that two workforce members responded to a phishing email which resulted in a breach of protected health information (PHI). The breach affected 44,960 individuals and included names, addresses, dates of birth · backfill source
  • 2026-09-25 · data_types: [] to ["names","ssn"] · backfill source
  • 2026-09-25 · records_basis: empty to organization · backfill source
  • 2026-09-25 · records: empty to 32499 · 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.

Everything about Torrance Memorial Medical Center

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