Every public data breach

Disclosed this week47On record26,367

47 disclosed this week · 26,367 on record

Ultra Clean Holdings

Disclosed Nov 9, 20206,060 affectedConfirmed

Official notice

What is known

People affected6,060 (as reported by the organization)
DisclosedNov 9, 2020
DiscoveredAug 5, 2020
HappenedAug 3, 2020
AttackNot stated
Data exposedNot stated
SectorOther · US
StatusConfirmed

Sources

Official noticeoag.ca.gov
California Attorney General breach notice: Ultra Clean Holdings
Official noticejustice.oregon.gov
Oregon DOJ breach notice: Ultra Clean Holdings
Official noticein.gov
Indiana Attorney General 2020 data breach report: Ultra Clean Holdings

Notices filed

Residents of INNov 9, 2020
Indiana AG3 people
Residents of ORNov 10, 2020
Oregon DOJ5,449 people
Residents of CADec 23, 2020
California AGCount not stated
History of this record
records_basis2026-09-25
empty to organizationby backfillSource
records2026-09-25
empty to 6060by backfillSource
disclosed2026-09-25
2020-11-10 to 2020-11-09by backfillSource
disclosed2026-09-25
2020-12-23 to 2020-11-10by backfillSource
discovered2026-09-25
empty to 2020-08-05by 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 Ultra Clean Holdings