BOKF Data Breach: SSNs Exposed
By Join The Case · Published November 25, 2025 · Updated November 25, 2025 · 6 min read
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Dapeer Law, P.A., a top-rated class action law firm, is investigating the BOKF data breach. If you received notice that your information was exposed during this breach, you may be entitled to compensation. It's free to join our investigation to see if we can help you recover.

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BOKF Data Breach Lawsuit Investigation

On November 21, 2025, customers of BOKF learned that personal data may have been exposed in a cybersecurity incident affecting the bank’s third-party vendor, Linedata Services Inc. If you received a breach letter, you may be entitled to free identity-protection services and potentially monetary compensation—contact us today to discuss your options.

Key Facts About the BOKF Incident

  • Initial vendor breach detected by Linedata Services Inc. on August 11, 2025; BOKF notified August 12, 2025.
  • BOKF determined on October 23, 2025, that client data resided in the compromised dataset.
  • Notice letters mailed November 21, 2025; breach reported to the Maine Attorney General on November 24, 2025.
  • Exposed information: name and Social Security number.
  • Free credit-monitoring service offered for one (1) year.
  • BOKF is monitoring the vendor’s investigation and will alert customers of significant developments.

What Happened

BOKF, NA (BOKF) uses Linedata Services Inc. to support various lines of its investment and credit-finance business. Linedata experienced a malicious encryption event within a specific asset-management domain on August 11, 2025. The next day, Linedata informed BOKF of the incident and its engagement with cybersecurity experts and law-enforcement agencies.

BOKF initially had no reason to believe client data was involved. During the course of the forensic review, however, BOKF learned on October 23, 2025, that certain customer information was stored on the affected Linedata system.

Information Exposed

According to BOKF’s notice filed with the Maine Attorney General, the following data elements could have been accessed:

  • Name
  • Social Security number

No misuse of the information has been reported at this time.

Company Response

BOKF states that it continues to:

  • Closely monitor Linedata’s forensic investigation.
  • Receive updates regarding law-enforcement engagement.
  • Provide affected clients with written notice and one-year credit monitoring at no cost.
Download Official Breach Notice (PDF)

Steps You Can Take to Protect Yourself

BOKF recommends that impacted individuals:

  • Enroll in the complimentary credit-monitoring service referenced in your letter.
  • Review the fraud-prevention tips on BOKF’s website.
  • Monitor financial accounts and credit reports for unfamiliar activity.
  • Report any suspicious transactions to BOKF at bokonlinefraud@bokf.com.

Potential Legal Options

Data-breach victims often incur out-of-pocket costs and the long-term risk of identity theft. State and federal laws allow consumers to seek damages when organizations fail to adequately protect personal information. If you received a BOKF breach letter, you may:

  • Pursue statutory damages under state privacy statutes.
  • Request reimbursement for time and expenses spent mitigating identity theft.
  • Join a class action to collectively recover losses stemming from the breach.

Company Overview

BOKF is a U.S. regional bank headquartered in Tulsa, Oklahoma. The company is a subsidiary of BOK Financial Corporation and trades on NASDAQ under the ticker BOKF.

  • Website: bokf.com
  • Headquarters: Bank of Oklahoma Tower, Boston Avenue at Second Street, Tulsa, Oklahoma, United States
  • Founded: 1910
  • Industry: Banking
  • Employees: 4,966
  • Parent: BOK Financial Corporation
  • Social: LinkedIn, X, Facebook, YouTube, Instagram

Frequently Asked Questions

I received a data breach letter from BOKF — what should I do?
Follow the instructions in the notice, activate the free credit-monitoring service, review your credit reports for unfamiliar activity, and consider speaking with a data-privacy attorney about potential claims.
How do I submit a claim related to the BOKF data breach?
Collect your notice letter, proof of any out-of-pocket expenses, and contact a qualified consumer-protection firm or class-action attorney to discuss eligibility.
What information did the BOKF breach expose?
The notice states that names and Social Security numbers were present in the compromised dataset.
Did BOKF offer credit monitoring, and for how long?
Yes. Impacted customers are eligible for complimentary credit-monitoring services for one (1) year.
How many people were affected by the BOKF breach?
BOKF’s filing does not specify the total number of impacted individuals.
How can I get the official breach notice (PDF) for BOKF?
You can download the full letter filed with the Maine Attorney General using the button above or directly from the AG website.

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