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Latest / California / March 2021

Capital One

Capital One notified California AG on Mar 26, 2021 of a data breach, which occurred on Mar 23, 2019.

All 10 filings by Capital One, state by state · Case file (dates, days to notice against the statute, what the letter offers, prior incidents)

Organization
Capital One
Source
California AG · source record
Date reported
Mar 26, 2021
Date(s) of breach
Friday, March 22, 2019Saturday, March 23, 2019
Residents affected
Not published by this source
Data exposed
Not stated in the source listing
Notice letter
Sample notice (PDF)
Days to notice
734 days from the end of the breach window (Mar 23, 2019, no discovery date in the letter) to the California record (Mar 26, 2021). Statute: 30 days from discovery or notification of the breach (Cal. Civ. Code § 1798.82).
First seen by BreachTally
2026-10-30 16:06 UTC

Dates and counts as filed by the organization with the agency. The breach window and the report date often differ by months.

First seen by BreachTally at 16:06 UTC on Oct 30, 2026. New filings reach paid subscribers within 30 minutes of the agency posting, with the count, the data exposed and the letter. Start a 14-day free trial. We email you two days before the first charge and you cancel in one click.
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Other filings by Capital One

OrganizationSourceStateReportedResidents affectedData exposed
Capital One Massachusetts OCABR MA Jan 28, 2026 1 Financial / bank account
Capital One Massachusetts OCABR MA Jan 26, 2026 1 Financial / bank account
Capital One Massachusetts OCABR MA Jan 23, 2026 1,451 Financial / bank account
Capital One Oregon DOJ OR May 26, 2023 16,779 Not stated
Capital One Oregon DOJ OR Sep 16, 2019 Not published Not stated
Capital One California AG CA Sep 11, 2019 Not published In the letter (PDF)
Capital One California AG CA Aug 12, 2019 Not published Social Security numberDate of birthTax ID / EIN / ITINName
Capital One California AG CA Aug 9, 2018 Not published Social Security numberFinancial / bank accountDate of birthPhone number+2
Capital One California AG CA Feb 6, 2017 Not published Financial / bank accountUsernames / passwordsPostal addressName

Data reproduced from a public government filing. Spot an error? Email support@breachtally.com with the record link. Corrections are applied and noted.