WesBanco Bank Data Breach
Last Updated on November 4, 2026
At A Glance
- What's Going On?
- Attorneys are gathering people impacted by the data breach affecting WesBanco Bank to take legal action via mass arbitration.
- What You Can Do
- If you got a notice about the data breach, have a WesBanco account, or received a loan, financing or other financial product from the bank, fill out this quick form to sign up. Though there are no guarantees, data breach victims could be owed $100s.
- What Am I Signing Up For, Exactly?
- You are signing up for what’s known as mass arbitration, which is different from a class action and involves hundreds or thousands of consumers filing individual arbitration claims against the same company at the same time.
- Does This Cost Anything?
- It costs nothing to sign up, and the attorneys will only get paid if they win your claim.
Was your information exposed in the WesBanco Bank data breach?
If so, join others taking action. It doesn't cost anything, and all you have to do is fill out a quick form using the link below.
WesBanco Bank Data Breach: Legal Investigation
Attorneys working with ClassAction.org are gathering consumers to sign up for legal action over the data breach affecting WesBanco Bank.
If you received notice about the breach or otherwise believe you were affected, keep reading to learn more and find out how to sign up.
WesBanco Bank Security Incident: What Happened?
In December 2025, WesBanco Bank reported to state regulators that it was impacted by a data breach affecting third-party marketing and communications vendor Marquis Software Solutions.
In late November 2025, Marquis began reporting that a data breach had exposed information received from some of its customers, including dozens of banks and credit unions.
According to a sample data breach notice sent to affected individuals, Marquis detected suspicious activity on its network on August 14, 2025 and determined after an investigation that an unauthorized party had gained access to and potentially acquired files from its systems. The letter notes that the data breach was limited to Marquis’ environment and did not impact the internal systems of its financial institution customers.
According to a report WesBanco filed with the Massachusetts Office of Consumer Affairs and Business Regulation, the Marquis Software Solutions data breach exposed Social Security numbers and financial account information. A sample data breach letter sent to those affected indicates that first and last names may have also been compromised.
What You Can Do After the WesBanco Bank Data Breach
If your information was exposed in the data breach affecting WesBanco Bank, you may be able to take legal action via mass arbitration, which is different from a class action lawsuit.
Though there are no guarantees, those who sign up could be owed $100s for potential violations of their rights.
Got a notice about the data breach impacting WesBanco Bank or believe you were affected? Fill out this quick, secure form to join others taking action.
WesBanco Bank Data Breach Notice
Take Action
If you got a notice about the data breach, have a WesBanco account, or received a loan, financing or other financial product from the bank, join others taking action by filling out this quick, secure form.
Published: November 4, 2026
Before commenting, please review our comment policy.
The information submitted on this page will be forwarded to Bryson Harris Suciu & DeMay PLLC who has sponsored this investigation.
Featured In:
Who Is ClassAction.org?
ClassAction.org is a group of online professionals who are committed to exposing corporate wrongdoing and giving consumers the tools they need to fight back.
We've been reporting on the legal space for nearly a decade and have built relationships with class action and mass tort attorneys across the country.
