Every public data breach

44 disclosed this week · 26,355 on record

Capital One

Disclosed Mar 20, 202316,779 affectedConfirmed

Official notice

What is known

People affected16,779 (as reported by the organization)
DisclosedMar 20, 2023
DiscoveredApr 26, 2023
HappenedFeb 1, 2023
AttackRansomware
Data exposedNot stated
SectorFinance · US
StatusConfirmed

Sources

Notices filed

Other breaches at Capital One

History of this record
records2026-09-25
572 to 16779by backfillSource
records2026-09-25
23 to 572by backfillSource
disclosed2026-09-25
2023-05-26 to 2023-03-20by backfillSource
records_basis2026-09-25
empty to organizationby backfillSource
records2026-09-25
empty to 23by backfillSource
Added2026-09-25
First recordedby backfillSource

First seen 2026-09-25 (Washington AG), confirmed by Washington AG. Record counts are as reported. Not legal advice.

Everything about Capital One