ONEMAIN FINANCIAL DATA BREACH: Edelson Lechtzin LLP Launches Investigation Into Exposure of Social Security Numbers

National class action firm Edelson Lechtzin LLP is offering free case evaluations to individuals affected by the OneMain Financial data breach, which may have exposed names, addresses, and Social Security numbers

EVANSVILLE, Ind., Sept. 29, 2026 (GLOBE NEWSWIRE) -- Edelson Lechtzin LLP, a national class action law firm, is investigating data privacy claims arising from the OneMain Financial Group, LLC data breach. OneMain Financial is a consumer lending company headquartered in Evansville, Indiana, operating more than 1,400 branches across 44 states. The company has begun notifying individuals whose personal information may have been exposed.

Key Facts at a Glance

• Company: OneMain Financial Group, LLC — a consumer lending company offering personal loans, auto loans, and related credit products through 1,400+ branches in 44 states.
• When it happened: OneMain Financial first identified the breach in May 2026 and determined that personal data was accessed or acquired on May 5, 2026.
• When disclosed: The breach was disclosed to state authorities beginning September 25, 2026, and OneMain began mailing notification letters on September 28, 2026.
• People affected: At least 15,472 Texas residents and 1,516 South Carolina residents, with thousands of individuals affected across multiple states.
• Information exposed: Names, addresses, Social Security numbers, and other account-related information.
  
  

What Happened

OneMain Financial discovered unauthorized activity on its systems in May 2026, stopped it, and launched an investigation with a cybersecurity and forensic firm. The investigation determined that data containing personal information was accessed or acquired on May 5, 2026. OneMain has not disclosed the type of cyberattack or the party responsible. The company reported the breach to the California, South Carolina, and Texas Attorneys General.

What Information Was Exposed

The compromised data may include names, addresses, Social Security numbers, and other account-related information. Because Social Security numbers and financial account details are highly sensitive, affected individuals face a lasting risk of identity theft, financial fraud, and targeted phishing.

Your Legal Options

Edelson Lechtzin LLP is investigating a potential class action to pursue legal remedies on behalf of individuals whose sensitive personal data may have been compromised. The firm is examining whether OneMain Financial implemented reasonable cybersecurity safeguards and whether additional measures could have prevented or reduced the breach’s impact. The firm will evaluate your rights and potential claims at no cost.

Recommended Protective Steps

• Preserve your breach notification letter and enroll in the complimentary credit monitoring before the December 31, 2026 deadline.
• Monitor your account statements and credit reports for unauthorized activity.
• Consider placing a fraud alert or security freeze with Equifax, Experian, and TransUnion.
• Be cautious of phishing messages referencing the breach.
  
  

Contact Us for a Free Case Evaluation

Speak confidentially with a data privacy attorney today: Marc Edelson, Esq., Edelson Lechtzin LLP, 411 S. State Street, Suite N-300, Newtown, PA 18940; Phone: 844-696-7492; Email: medelson@edelson-law.com; or click HERE to request a free consultation.

About Edelson Lechtzin LLP

Edelson Lechtzin LLP is a national class action law firm with offices in Pennsylvania and California. In addition to data breach litigation, the firm handles class and collective actions involving securities and investment fraud, federal antitrust violations, ERISA employee benefit plans, wage theft, and consumer fraud.

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