Every public data breach

Disclosed this week44On record26,355

44 disclosed this week · 26,355 on record

Frost Bank

Disclosed May 20, 2026200,271 affectedConfirmed

Official notice

What is known

People affected200,271 (as reported by the organization)
DisclosedMay 20, 2026
DiscoveredApr 22, 2026
HappenedDec 6, 2025
AttackNot stated
Data exposedSocial Security numbersPayment cardsFinancialDates of birthAddressesNames
SectorFinance · US
StatusConfirmed

Sources

Official noticeoag.ca.gov
California Attorney General breach notice: Frost Bank
Official noticeoag.my.site.com
Texas Attorney General data security breach report BR-0005051: Frost Bank
Official noticeago.vermont.gov
Vermont Attorney General breach report: Frost Bank

Notices filed

Residents of CAMay 20
California AGCount not stated
Residents of TXMay 20
Texas AG191,848 people
Residents of VTMay 20
Vermont AG18 people
History of this record
source2026-09-25
empty to https://ago.vermont.gov/categories/security-breach-noticesby backfillSource
data_types2026-09-25
[] to ["ssn","payment-card","financial","dob","addresses","names"]by backfillSource
records_basis2026-09-25
empty to organizationby backfillSource
records2026-09-25
empty to 200271by backfillSource
discovered2026-09-25
empty to 2026-04-22by backfillSource
Added2026-09-25
First recordedby backfillSource

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

Everything about Frost Bank