Case file: Capital One
Every government filing on this incident, the dates as stated, and the days to notice against each state's statute. Built from the records on Nov 9, 2026, agency link on every row. Not legal advice.
The incident
- Breach window
- Not stated in the filings
- Discovered
- No letter on file to read
- State and federal records
- 3 filings, Jan 23, 2026 to Jan 28, 2026
- Residents counted
- 1 in 1 state (MA), latest filing per state
- Everyone affected
- No filing gives a total
- Information exposed
- Financial / bank account
- Offered to those affected
- No letter on file to read
- Third party named
- No letter on file to read
- Prior incidents
- 5 earlier incidents on record for this organization
Filings
| Agency | Record date | People | In total | Days to notice | Links |
|---|---|---|---|---|---|
| Massachusetts Massachusetts OCABR | Jan 28, 2026 | 1 | Later filing, first record Jan 23, 2026 | Record | |
| Massachusetts Massachusetts OCABR | Jan 26, 2026 | 1 | Later filing, first record Jan 23, 2026 | Record | |
| Massachusetts Massachusetts OCABR | Jan 23, 2026 | 1,451 | No dates to count between | Record |
People is the count the filing gives, residents of the state unless marked total. Days to notice runs from the discovery date the letter states, or from the end of the breach window when no letter states one, to the date on the state's first record of the incident. "Over" marks a count past the days the state's statute allows for notice to residents. The statute's trigger is a question of fact, the days are arithmetic.
The statutes
- Massachusetts: no fixed period to notify residents from knowledge or reason to know of the breach, Mass. Gen. Laws ch. 93H, § 3. Attorney General and OCABR as soon as practicable and without unreasonable delay, every breach.
Prior incidents by Capital One
| Records | Breach window | Filed with | People |
|---|---|---|---|
| May 26, 2023 | Feb 1, 2023 to Feb 4, 2023 | Oregon | 16,779 total |
| Mar 26, 2021 | Mar 23, 2019 | California | n/a |
| Aug 12, 2019 to Sep 16, 2019 | Mar 22, 2019 to Mar 23, 2019 | Oregon, California, California | n/a |
| Aug 9, 2018 | Jan 27, 2017 | California | n/a |
| Feb 6, 2017 | Not stated in the filings | California | n/a |
Filings more than six months apart are shown as separate incidents.
Sources and method
Records as published by Massachusetts OCABR. Letter facts (discovery date, monitoring, third party) are read from the consumer letter the agency posted, 0 letters read for this incident, and quoted so you can check them. Texas and HHS publish no letters. First-seen times on each record page. Spot an error? Email support@breachtally.com with this page link.