Columbia Bank data breach

Clerk's notes

On April 17, 2026, Columbia Bank officially informed the Washington Attorney General about a data security incident. This report confirms that unauthorized access to their systems occurred, initiating an investigation into the scope and impact of the event.

Individuals who received a data breach notification letter from Columbia Bank should understand that this notice signifies their personal information was potentially exposed. The bank's notification is intended to inform recipients that their data was involved in the security incident.

The incident is currently under investigation to determine the full extent of the unauthorized access. Columbia Bank states that its notification serves to alert affected customers about the event, the types of data generally involved, and the steps the institution is taking to address security concerns and support those affected.

If you received a notification, it is prudent to review the letter carefully for any specific recommendations from Columbia Bank. As a general precaution, consider monitoring your financial accounts and credit reports for any suspicious activity.

For those impacted by the Columbia Bank data security incident and who have received an official notification, understanding your legal options can be helpful. A free case review can provide clarity on what steps you might take next, without any obligation.

If a notification letter about this breach reached you, see every Washington data breach on file or browse all cases.