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Latest / California / April 2026

Columbia Bank

Columbia Bank notified California AG on Apr 17, 2026 of a data breach, which occurred between Oct 2, 2025 and Dec 22, 2025.

Organization
Columbia Bank
Source
California AG · source record
Date reported
Apr 17, 2026
Date(s) of breach
10/02/2025, 12/22/2025
Residents affected
Not published by this source
Data exposed
Not stated in the source listing
Notice letter
Not available
First seen by BreachTally
2026-10-30 15:27 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 15:27 UTC on Oct 30, 2026. New filings reach paid subscribers within 30 minutes of the agency posting, with the data types and the letter. Start a 14-day free trial.

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