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44 disclosed this week · 26,355 on record

St.Mary's Health

Disclosed Mar 5, 20153,952 affectedConfirmed

Official notice

On December 3, 2014, the covered entity (CE), St. Mary’s Health, discovered that a phishing email attack compromised several employees’ user names and passwords. The breach affected approximately 3,952 individuals. The types of protected health information (PHI) involved in the breach included patients’ names, addresses, date of birth, clinical information, and in some instances, social security numbers. The CE provided breach notification to HHS, affected individuals and the media. Following the breach, the CE deployed a program to assist users in identifying phishing and malware attacks. OCR obtained documented assurances that the CE implemented the corrective actions listed above.

What is known

People affected3,952 (as reported to HHS)
DisclosedMar 5, 2015
HappenedDec 10, 2015
AttackHacking
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

Other breaches at St.Mary's Health

History of this record
attack2026-09-25
unknown to hackingby backfillSource
data_types2026-09-25
[] to ["names","health"]by backfillSource
records_basis2026-09-25
organization to hhsby backfillSource
records2026-09-25
69 to 3952by backfillSource
disclosed2026-09-25
2015-11-16 to 2015-03-05by backfillSource
summary2026-09-25
empty to On December 3, 2014, the covered entity (CE), St. Mary’s Health, discovered that a phishing email attack compromised several employees’ user names and passwords. The breach affected approximately 3,952 individuals. The types of protected heby backfillSource
disclosed2026-09-25
2016-03-09 to 2015-11-16by backfillSource
Added2026-09-25
First recordedby backfillSource

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

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