Frost Bank
Disclosed May 20, 20264 months ago200,271 affectedConfirmed
What is known
| People affected | 200,271 (as reported by the organization) |
|---|---|
| Disclosed | May 20, 2026 |
| Discovered | Apr 22, 2026 |
| Happened | Dec 6, 2025 |
| Attack | Not stated |
| Data exposed | Social Security numbers, Payment cards, Financial, Dates of birth, Addresses, Names |
| Sector | Finance · US |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| California Attorney General breach notice: Frost Bankoag.ca.gov · Official notice | Official notice |
| Texas Attorney General data security breach report BR-0005051: Frost Bankoag.my.site.com · Official notice | Official notice |
| Vermont Attorney General breach report: Frost Bankago.vermont.gov · Official notice | Official notice |
Notices filed
| Where | Filed | People |
|---|---|---|
| California AGresidents of CA | May 20 | |
| Texas AGresidents of TX | May 20 | 191,848 |
| Vermont AGresidents of VT | May 20 | 18 |
History of this record
- 2026-09-25 · source: empty to https://ago.vermont.gov/categories/security-breach-notices · backfill source
- 2026-09-25 · data_types: [] to ["ssn","payment-card","financial","dob","addresses","names"] · backfill source
- 2026-09-25 · records_basis: empty to organization · backfill source
- 2026-09-25 · records: empty to 200271 · backfill source
- 2026-09-25 · discovered: empty to 2026-04-22 · backfill source
- 2026-09-25 · added · backfill source
First seen 2026-09-25 (California AG), confirmed by California AG. Record counts are as reported. Not legal advice.