Law Firm Probes Happy State Bank Breach Affecting Thousands

The incident centers on a file transfer error involving Fidelity Information Services (FIS), which manages specific banking operations for the institution. According to filings with the Texas Attorney General, an FIS employee inadvertently sent a customer file to an unauthorized recipient at another financial institution on August 7, 2026. The file was accessed three days later, prompting a containment effort that included recalling the email and confirming the file’s destruction.

While the bank has initiated security protocols, the full scope of the breach remains unclear. Exposed data potentially includes Social Security numbers, driver’s license information, health insurance details, and primary financial account numbers. This combination of sensitive identifiers leaves affected customers at a heightened risk for identity theft and fraudulent account activity. Edelson Lechtzin LLP is currently offering confidential evaluations for those impacted, exploring legal remedies for potential losses related to privacy erosion and out-of-pocket expenses resulting from the exposure.