Columbia Bank Breach Lawsuit Investigation

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Date of Breach Dates of Breach
October 2, 2025 - December 22, 2025
Allegation Allegation
Data Breach
Institution Type Industry
Banking
Number Impacted Number Impacted
Unknown
What Happened?

What Is This About?

If you received a letter or email from Columbia Bank about a data breach, your personal information may have been exposed. Our firm is investigating this incident and can help you understand your rights and potential legal options.

What Happened?

What Happened?

Columbia Bank, a major regional bank headquartered in Tacoma, Washington, disclosed a security incident involving unauthorized access to certain internal applications.

According to the bank’s sample notice, an unauthorized third party accessed certain Columbia Bank systems between October 2, 2025, and December 22, 2025. After discovering the activity, the bank engaged a forensic security firm to investigate and secure its systems. A review to determine what specific information may have been impacted was completed on March 6, 2026.

On April 17, 2026, Columbia Bank filed a notice of the incident with the California Attorney General. The total number of individuals affected has not yet been publicly disclosed.

What Happened?

What Information Was Impacted?

The exact categories of information involved have not been definitively confirmed and information may vary by individual. Based on information and belief, the following types of sensitive personal information may have been compromised:

                        • Names;
                        • Social Security numbers;
                        • Driver’s license numbers; and
                        • Financial account numbers.
What Happened?

What Action Can You Take?

Levi & Korsinsky, LLP is investigating whether affected individuals are entitled to compensation. If you are related to Columbia Bank or received a notice from them, there is no cost or obligation to participate. Follow the link below to find out about your rights and potential legal remedies available.

About

Columbia Bank

Columbia Bank is a regional bank based in Tacoma, Washington. It operates as a subsidiary of Columbia Banking System, Inc. and is the largest bank headquartered in the American Northwest. The bank provides personal, business, and institutional banking and lending services through more than 350 branch locations across Arizona, California, Colorado, Idaho, Nevada, Oregon, Utah, and Washington.

About

Levi & Korsinsky

Levi & Korsinsky is a nationally recognized consumer advocacy law firm that has recovered hundreds of millions of dollars against large corporations. The firm is a 100% contingency firm – we don’t get paid unless you get paid! Attorney Advertising. Prior results do not guarantee similar outcomes.  

UNDER THE RULES OF CERTAIN JURISDICTIONS, THIS WEBSITE MAY CONSTITUTE ATTORNEY ADVERTISING.

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