Every public data breach

44 disclosed this week · 26,355 on record

Cerebral

Disclosed Mar 1, 20233,179,835 affectedConfirmed

Official notice

Cerebral, the business associate (BA) reported that it may have impermissibly disclosed the protected health information (PHI) of 3,179,835 individuals through the use of Internet tracking technologies. The PHI involved include names, addresses birthdates, diagnoses, and other treatment information. The BA notified HHS, affected individuals, the media, and provided substitute notice on its website. In response to the breach, Cerebral provided complimentary credit monitoring services and revised its policies and procedures, retrained workforce members, and implemented additional administrative and technical safeguards.

What is known

People affected3,179,835 (as reported to HHS)
DisclosedMar 1, 2023
DiscoveredJan 3, 2023
HappenedOct 12, 2019
AttackHacking
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Notices filed

History of this record
data_types2026-09-25
[] to ["names","health"]by backfillSource
records_basis2026-09-25
empty to hhsby backfillSource
records2026-09-25
empty to 3179835by backfillSource
disclosed2026-09-25
2023-03-03 to 2023-03-01by backfillSource
summary2026-09-25
empty to Cerebral, the business associate (BA) reported that it may have impermissibly disclosed the protected health information (PHI) of 3,179,835 individuals through the use of Internet tracking technologies. The PHI involved include names, addreby backfillSource
sector2026-09-25
other to healthby backfillSource
attack2026-09-25
unknown to hackingby backfillSource
disclosed2026-09-25
2023-03-06 to 2023-03-03by backfillSource
discovered2026-09-25
empty to 2023-01-03by 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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