Every public data breach

44 disclosed this week · 26,355 on record

Allegheny County Pennsylvania

Disclosed Jul 28, 2023967,690 affectedConfirmed

Official notice

Allegheny County, the business associate (BA), reported that it experienced a cyber-attack that compromised the protected health information (PHI) of 1,505 individuals. The PHI involved included names, birthdates, health insurance information, and other treatment information. The BA notified HHS, affected individuals, the media, and posted substitute notice on its website. In its mitigation efforts, the BA implemented additional administrative and technical safeguards to better protect PHI.

What is known

People affected967,690 (as reported by the organization)
DisclosedJul 28, 2023
HappenedMay 28, 2023
AttackHacking
Data exposedNamesHealth
SectorGovernment · US
StatusConfirmed

Sources

Notices filed

History of this record
attack2026-09-25
unknown to hackingby backfillSource
data_types2026-09-25
[] to ["names","health"]by backfillSource
summary2026-09-25
empty to Allegheny County, the business associate (BA), reported that it experienced a cyber-attack that compromised the protected health information (PHI) of 1,505 individuals. The PHI involved included names, birthdates, health insurance informatiby backfillSource
records_basis2026-09-25
empty to organizationby backfillSource
records2026-09-25
empty to 967690by backfillSource
occurred2026-09-25
empty to 2023-05-28by backfillSource
Added2026-09-25
First recordedby backfillSource

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

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