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MonitoringWashington AG filing · April 17, 2026

Columbia Bank Files Data Breach Notice in Washington State

Columbia Bank reported a data security incident to the Washington Attorney General on April 17, 2026. This filing indicates that sensitive personal and financial information may have been exposed, posing risks of identity theft and financial fraud for those affected.

State
Washington
Reported
April 17, 2026

What may have been exposed

  • Full Name
  • Social Security Number
  • Financial Account Number
  • Routing Number
  • Date of Birth
  • Address History
  • Credit Score Information
  • Transaction History

Columbia Bank, a financial institution operating in the Pacific Northwest, submitted a data security incident report to the Washington Attorney General's office on April 17, 2026. This filing serves as a public record of a data breach event impacting the bank's systems or data.

The official filing with the Washington Attorney General indicates that a data security incident occurred. While the exact nature of how the incident happened was not specified in the public filing, such events generally involve unauthorized access to sensitive information held by the bank.

The data categories reportedly exposed in this incident include Full Name, Social Security Number, Financial Account Number, Routing Number, Date of Birth, Address History, Credit Score Information, and Transaction History. The compromise of such comprehensive personal and financial details can lead to significant risks for individuals.

Individuals whose information was exposed should consider taking steps to protect themselves. This includes regularly monitoring financial accounts and credit reports for suspicious activity. Placing a fraud alert or security freeze on credit files can also help prevent unauthorized accounts from being opened in one's name.

It is advisable to review all account statements and credit explanations carefully. If any unfamiliar transactions or accounts are detected, contact the financial institution and credit reporting agencies immediately. Such protective measures are general recommendations for safeguarding personal information following a data exposure.

What to do if you were affected

Based on the categories of information reported in this filing, these steps can help limit the risk of identity theft and fraud.

  • Freeze your credit

    Place a free credit freeze with Equifax, Experian, and TransUnion. A freeze blocks new accounts from being opened in your name and can be lifted anytime.

  • Watch your financial accounts

    Review bank and card statements for unfamiliar activity and turn on transaction alerts. Report anything you don't recognize to your bank right away.

  • Stay alert to targeted scams

    Be cautious of calls, texts, or emails that reference this breach. Legitimate organizations won't ask you to confirm sensitive details through an unsolicited message.

  • Keep your notification letter

    Save the notice you received. It documents that your information was involved and is often needed to enroll in any credit monitoring offered or to join a related legal claim.

What to know about the Columbia Bank data breach

How many people were affected by the Columbia Bank data breach, and what was exposed?
The filing does not give a count of affected people and lists the following information as involved: Full Name, Social Security Number, Financial Account Number, Routing Number, Date of Birth, Address History, Credit Score Information, Transaction History. Your own letter is the best guide to what was exposed about you, since notices are usually tailored to each person.
Where can I see the official Columbia Bank breach notice?
Columbia Bank's report is published by the Washington Attorney General: https://agportal-s3bucket.s3.amazonaws.com/databreach/BreachA37811.pdf Compare it with the letter you received to confirm the dates and details match.
What should I do after getting the Columbia Bank data breach notice?
Keep the letter and the envelope, and note the date it arrived. Freeze your credit with Equifax, Experian and TransUnion, change any passwords the notice mentions, and sign up for any free credit monitoring the letter offers. Then check whether you may have a claim.
Is the Columbia Bank data breach letter legit or a scam?
A notice from Columbia Bank in the mail matches the breach Columbia Bank reported to the Washington Attorney General on April 17, 2026. Check that the company name and dates in your letter match that filing. A real notice of data security incident won't ask for your password, Social Security number or a payment — if it does, contact Columbia Bank through a phone number or website you find yourself.
Did Columbia Bank offer free credit monitoring?
Look for an enrollment code in your Columbia Bank notice. Companies that offer free credit monitoring after a breach usually include it there, with a deadline to activate. Because Social Security numbers are listed in this filing, identity monitoring and a credit freeze matter more than usual. Signing up doesn't waive any legal rights you may have.
Can I sue Columbia Bank over the data breach?
It depends on what was exposed, the law in Washington and your own state, and whether you've been harmed. Most people take part through a class action rather than suing alone. Keep your notification letter — it's the proof that connects you to the breach.
Is there a Columbia Bank data breach class action lawsuit?
Law firms often open an investigation after a breach notice like this one, and a class action lawsuit may follow. This page doesn't confirm that a lawsuit has been filed against Columbia Bank. You usually don't have to join a class action to be included — if a settlement is reached, class members are notified and can file a claim.
How much could a Columbia Bank data breach settlement or claim be worth?
There is no set amount, and no Columbia Bank settlement is confirmed here. In past data breach settlements, payments depended on what data was exposed and on documented losses — fraud, out-of-pocket costs and time spent dealing with the breach. The filing lists Full Name, Social Security Number, Financial Account Number as involved. Keep receipts and records; they're what damages claims are built on.
Do I need a Columbia Bank data breach lawyer or attorney?
An attorney can read your notice and tell you whether a claim makes sense. A case review here is free, and data breach cases are usually handled on contingency, so there is no upfront cost.

Source: Washington Attorney General filing

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