Every public data breach

Disclosed this week47On record26,367

47 disclosed this week · 26,367 on record

Coinbase

Disclosed Sep 27, 20216,159 affectedConfirmed

Official notice

What is known

People affected6,159 (as reported by the organization)
DisclosedSep 27, 2021
HappenedMar 17, 2021
AttackNot stated
Data exposedNot stated
SectorFinance · US
StatusConfirmed

Sources

Official noticeoag.ca.gov
California Attorney General breach notice: Coinbase
Official noticein.gov
Indiana Attorney General 2021 data breach report: Coinbase

Notices filed

Residents of CASep 27, 2021
California AGCount not stated
Residents of INSep 27, 2021
Indiana AG78 people

Other breaches at Coinbase

Coinbase confirms contractor improperly accessed data of about 30 customersInsider exposed names, emails, phone numbers, dates of birth, government IDs and financial details. Reported to the Indiana AG.Insider32 affectedCryptoUSDec 11, 2025Bribed support contractors leak Coinbase customer data, $20M extortionInsider exposed names, addresses, emails, phone numbers, Social Security numbers, financial details, government IDs and internal documents. Reported to the California AG.Insider69K affectedCryptoUSMay 14, 2025
History of this record
records_basis2026-09-25
empty to organizationby backfillSource
records2026-09-25
empty to 6159by 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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