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44 disclosed this week · 26,355 on record

University Medical Center of Southern Nevada

Disclosed Mar 31, 20211,300,000 affectedConfirmed

Official notice

The covered entity (CE), University Medical Center of Southern Nevada, reported that its business associate (BA) was the victim of a cyber-attack affecting the protected health information (PHI) of 12,230 individuals. The PHI involved included names, addresses, dates of birth, Social Security numbers, and financial information. The CE notified HHS, affected individuals, the media, and provided substitute notice. In response to the breach the CE implemented additional administrative and technical safeguards and provided complimentary credit monitoring services to affected individuals.

What is known

People affected1,300,000 (as reported by the organization)
DisclosedMar 31, 2021
DiscoveredJun 14, 2021
HappenedJun 14, 2021
AttackHacking
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

Other breaches at University Medical Center of Southern Nevada

History of this record
disclosed2026-09-25
2021-08-02 to 2021-03-31by backfillSource
data_types2026-09-25
[] to ["names","health"]by backfillSource
summary2026-09-25
empty to The covered entity (CE), University Medical Center of Southern Nevada, reported that its business associate (BA) was the victim of a cyber-attack affecting the protected health information (PHI) of 12,230 individuals. The PHI involved incluby backfillSource
records_basis2026-09-25
empty to organizationby backfillSource
records2026-09-25
empty to 1300000by backfillSource
disclosed2026-09-25
2021-10-11 to 2021-08-02by backfillSource
attack2026-09-25
unknown to hackingby backfillSource
disclosed2026-09-25
2021-10-15 to 2021-10-11by backfillSource
discovered2026-09-25
empty to 2021-06-14by backfillSource
Added2026-09-25
First recordedby backfillSource

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

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