Columbia Bank data breach

Clerk's notes

On April 17, 2026, Columbia Bank, a prominent financial institution serving the Pacific Northwest, filed a data breach report with the Washington Attorney General's office. This formal notification indicates a significant security incident has occurred, impacting the sensitive personal and financial data entrusted to the bank by its customers. The investigation into the incident is currently in a monitoring status, meaning regulators are actively overseeing the situation.

The breach exposed a range of critical data categories. Affected individuals may have had their Full Name, Social Security Number, Financial Account Number, Routing Number, Date of Birth, Address History, Credit Score Information, and Transaction History compromised. Such information, when accessed by unauthorized parties, can lead to serious risks including identity theft and financial fraud.

The exposure of these specific data types carries substantial consequences. With Financial Account Numbers and Routing Numbers, alongside identifiers like Full Name and Social Security Number, malicious actors could potentially attempt to gain unauthorized access to accounts, initiate fraudulent transactions, or open new lines of credit under a victim's identity. This necessitates ongoing vigilance from affected individuals to protect their financial security.

Financial institutions like Columbia Bank are held to strict standards for protecting customer data under federal and state laws, including the Gramm-Leach-Bliley Act and the Washington Consumer Protection Act. Receiving a data breach notification letter from Columbia Bank serves as official confirmation that your information was involved in this security incident. Such a letter provides you with legal standing to understand your options.

If you have received a data breach notification from Columbia Bank, it is important to understand what steps you can take. Our firm is currently investigating potential claims related to this incident. You are welcome to request a free case review to discuss the specific details of your situation and learn more about your potential rights without any out-of-pocket cost.

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