Every public data breach

Disclosed this week44On record26,355

44 disclosed this week · 26,355 on record

Neiman Marcus Group

Disclosed Sep 30, 20214,354,346 affectedConfirmed

Official notice

What is known

People affected4,354,346 (as reported by the organization)
DisclosedSep 30, 2021
DiscoveredSep 9, 2021
HappenedMay 2, 2020
AttackHacking
Data exposedNamesCredentials and tokens
SectorOther · US
StatusConfirmed

Sources

Official noticeoag.ca.gov
California Attorney General breach notice: Neiman Marcus Group
Official noticeatg.wa.gov
Washington Attorney General breach notice: Neiman Marcus Group
Official noticeattorneygeneral.delaware.gov
Notice letter filed with the Delaware DOJ: Neiman Marcus Group
Official noticejustice.oregon.gov
Oregon DOJ breach notice: Neiman Marcus Group
Official noticein.gov
Indiana Attorney General 2021 data breach report: Neiman Marcus Group

Notices filed

Residents of CASep 30, 2021
California AGCount not stated
Residents of WASep 30, 2021
Washington AG67,410 people
Residents of DESep 30, 2021
Delaware DOJ30,022 people
Residents of ORSep 30, 2021
Oregon DOJ4,354,346 people
Residents of INSep 30, 2021
Indiana AG31,992 people

Other breaches at Neiman Marcus Group

Hacking breachHacking, data exposed not stated. Reported to the Vermont AG.USJun 24, 2024Breach, details not statedExposed names and payment cards. Reported to the California AG.6,494 affectedUSJan 29, 2016Breach, details not statedExposed names, Social Security numbers, addresses and payment cards. Reported to the California AG.USJan 25, 2014
History of this record
source2026-09-25
empty to https://www.in.gov/attorneygeneral/consumer-protection-division/id-theft-prevention/files/Data-Breach-Year-to-date-Report-2021-1.pdfby backfillSource
data_types2026-09-25
[] to ["names","credentials"]by backfillSource
records_basis2026-09-25
empty to organizationby backfillSource
records2026-09-25
empty to 4354346by backfillSource
attack2026-09-25
unknown to hackingby backfillSource
discovered2026-09-25
empty to 2021-09-09by 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 Neiman Marcus Group