Every public data breach

Disclosed this week47On record26,367

47 disclosed this week · 26,367 on record

International Business Machines

Disclosed Sep 22, 2023630,755 affectedConfirmed

Official notice

What is known

People affected630,755 (as reported to HHS)
DisclosedSep 22, 2023
AttackInsider
Data exposedNamesHealth
SectorHealthcare · US
StatusConfirmed

Sources

Official noticeoag.ca.gov
California Attorney General breach notice: International Business Machines
Official noticeocrportal.hhs.gov
HHS OCR breach report (archive, resolved): International Business Machines (Business Associate, NY)

Notices filed

Residents of CASep 22, 2023
California AGCount not stated
TotalSep 29, 2023
HHS archive630,755 people
History of this record
sector2026-09-25
other to healthby backfillSource
attack2026-09-25
unknown to insiderby backfillSource
data_types2026-09-25
[] to ["names","health"]by backfillSource
records_basis2026-09-25
empty to hhsby backfillSource
records2026-09-25
empty to 630755by 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.

Everything about International Business Machines