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Frost Bank: data breach filings, state by state

Frost Bank has 4 data breach filings on record in 4 government portals. The latest was reported to Vermont AG on May 20, 2026, with 18 Vermont residents. Data exposed, as filed: Social Security number, Financial / bank account, Usernames / passwords, Email address, Phone number, Postal address, Date of birth.

191,999residents counted in 3 states (VT, MA, TX). Latest filing per state, last twelve months
200,271people in total, as reported to Texas AG on May 20, 2026
4filings in 4 government portals
May 20, 2026latest filing, Vermont AG

By portal

PortalFilingsLatest reportPeople in the latest filing
Vermont AG1May 20, 202618 Vermont residents
Massachusetts OCABR1May 20, 2026133 Massachusetts residents
California AG1May 20, 2026Not published
Texas AG1May 20, 2026191,848 Texas residents

Counts are the organization's own, as filed with each agency. Most state portals count their own residents only, so no single state shows the whole incident. An organization can file more than once for the same incident, and for different ones.

Case file

Breach window
Dec 6, 2025 to Apr 16, 2026
Discovered
No discovery date stated in the letters we read
Offered to those affected
credit or identity monitoring through Experian (term not stated in the letter we read)
Third party named
No

Open the case fileWord document

Every filing with the agency links, each state's record against its statutory period with the citation, what the letter offers, prior incidents. Letter facts are quoted so you can check them.

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Every filing

OrganizationSourceStateReportedResidents affectedData exposed
Frost Bank Vermont AG VT May 20, 2026 18 Social Security numberFinancial / bank account
Frost Bank Massachusetts OCABR MA May 20, 2026 133 Social Security numberFinancial / bank account
Frost Bank California AG CA May 20, 2026 Not published Social Security numberUsernames / passwordsEmail addressPhone number+2
Frost Bank Texas AG TX May 20, 2026 191,848 Social Security numberFinancial / bank accountDate of birthPostal address+1

Data reproduced from public government filings. Each row opens the record with the agency link. Spot an error? Email support@breachtally.com with the page link. Corrections are applied and noted.