Frost Bank Faces Lawsuits Over Alleged Vendor Breach Affecting 109k Customers
Frost Bank said a third-party vendor notified it of unauthorized access that may have included customer data; lawsuits allege Everest-linked theft affecting about 109,000 customers.
See the structured BreachHistory record at https://breachhistory.com/cullenfrost/frost-bank2026-vendor-everest.