Every public data breach

Disclosed this week44On record26,355

44 disclosed this week · 26,355 on record

Columbia Bank

Disclosed Apr 17, 2026Confirmed

Official notice

What is known

People affectedNot stated in the sources we have
DisclosedApr 17, 2026
DiscoveredDec 19, 2025
HappenedOct 2, 2025
AttackLost or stolen device
Data exposedNot stated
SectorFinance · US
StatusConfirmed

Sources

Official noticeoag.ca.gov
California Attorney General breach notice: Columbia Bank
Official noticeatg.wa.gov
Washington Attorney General breach notice: Columbia Bank

Notices filed

Residents of CAApr 17
California AGCount not stated
Residents of WAApr 17
Washington AG1,607 people
History of this record
attack2026-09-25
unknown to lost-deviceby backfillSource
discovered2026-09-25
empty to 2025-12-19by 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 Columbia Bank