Every public data breach

Disclosed this week44On record26,355

44 disclosed this week · 26,355 on record

Capital One

Disclosed Feb 6, 20203,740 affectedConfirmed

Official notice

What is known

People affected3,740 (as reported by the organization)
DisclosedFeb 6, 2020
DiscoveredJun 17, 2020
HappenedAug 6, 2020
AttackNot stated
Data exposedNamesPayment cardsFinancialSocial Security numbers
SectorTech · US
StatusConfirmed

Sources

Official noticein.gov
Indiana Attorney General 2021 data breach report: Capital One
Official noticein.gov
Indiana Attorney General 2020 data breach report: Capital One
Official noticemaine.gov
Maine Attorney General breach notice archive: Capital One

Notices filed

Residents of MEFeb 6, 2020
Maine AG3 people
Residents of MEJul 16, 2020
Maine AG1 person
Residents of INAug 5, 2020
Indiana AG4 people
Residents of INAug 19, 2020
Indiana AG26 people
Residents of INSep 22, 2020
Indiana AG1 person
Residents of INMar 19, 2021
Indiana AG2 people
Residents of INMar 30, 2021
Indiana AG7 people
Residents of INMay 5, 2021
Indiana AG8 people

Other breaches at Capital One

Breach, details not statedBreach notice filed with the Indiana AG, details not stated.12 affectedTechUSJan 12Breach, details not statedBreach notice filed with the Indiana AG, details not stated.1 affectedTechUSApr 4, 2025Ransomware breachRansomware, data exposed not stated. Reported to the Indiana AG.17K affectedFinanceUSMar 20, 2023Cloud intrusion exposes data of 100 million US and 6 million Canadian applicantsExposed data exposed names, addresses, phone numbers, dates of birth, Social Security numbers, financial details, government IDs and payment cards. Reported to the California AG.Exposed data106M affectedFinanceUSFeb 1, 2019Breach, details not statedBreach notice filed with the California AG, details not stated.TechUSFeb 6, 2017
History of this record
data_types2026-09-25
["names","payment-card","financial"] to ["names","payment-card","financial","ssn"]by backfillSource
disclosed2026-09-25
2020-07-16 to 2020-02-06by backfillSource
data_types2026-09-25
[] to ["names","payment-card","financial"]by backfillSource
disclosed2026-09-25
2020-08-05 to 2020-07-16by backfillSource
discovered2026-09-25
empty to 2020-06-17by backfillSource
disclosed2026-09-25
2020-09-22 to 2020-08-05by backfillSource
disclosed2026-09-25
2021-03-19 to 2020-09-22by backfillSource
Added2026-09-25
First recordedby backfillSource

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

Everything about Capital One