Capital One, National Association

Disclosed Dec 4, 201820,675 affectedConfirmed

What is known

People affected	20,675 (as reported by the organization)
Disclosed	Dec 4, 2018
Discovered	Dec 18, 2018
Happened	Jul 25, 2017
Attack	Not stated
Data exposed	NamesSocial Security numbersPayment cardsFinancial
Sector	Finance · US
Status	Confirmed

History of this record

records2026-09-25

564 to 20675by backfillSource

disclosed2026-09-25

2019-01-07 to 2018-12-04by backfillSource

Added2026-09-25

First recordedby backfillSource

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