Data Breach Law Group Investigates the Centennial Bank (including its division Happy State Bank) Data Breach

Miami, FL — Data Breach Law Group is investigating a data breach involving Centennial Bank (including its division Happy State Bank), reported to the Texas Attorney General on September 17, 2026. The firm is reviewing whether affected individuals have legal claims arising from the incident.

Centennial Bank, operating prominently throughout the region and inclusive of its division Happy State Bank, is a well-established financial institution delivering comprehensive commercial banking, retail banking, wealth management, and lending services to individuals, families, and businesses. Because financial institutions serve as the central repository for their customers' lifelong financial lives, Centennial Bank routinely collects, processes, and stores an extensive volume of highly confidential data. This includes core banking records, transactional histories, loan applications, and sensitive personally identifiable information required to facilitate everyday monetary transactions, secure lines of credit, and manage complex wealth portfolios.

In 2026, Centennial Bank formally reported a significant data security incident to the Office of the Texas Attorney General. While the precise mechanics of the intrusion are subject to ongoing forensic investigation, security events impacting major financial entities typically involve sophisticated cyberattacks, unauthorized network intrusions, or vulnerabilities within third-party vendor ecosystems utilized for digital banking, loan processing, or customer relationship management. In the financial sector, threat actors aggressively target infrastructure to infiltrate core databases, deploy ransomware, or exfiltrate massive troves of consumer data for illicit monetization on the dark web.

The exposure resulting from this security failure puts affected customers at immediate and severe risk of financial harm. The compromised datasets characteristically include a combination of sensitive information such as full names, Social Security numbers, dates of birth, financial account numbers, bank routing numbers, and detailed transaction histories. When combined, this information equips malicious actors with everything required to execute unauthorized account takeovers, drain checking and savings accounts, open fraudulent lines of credit in the victim's name, file fraudulent tax returns, and subject victims to sophisticated, targeted financial phishing scams that can persist for years.

As a federally insured financial institution, Centennial Bank and its division Happy State Bank are bound by stringent regulatory frameworks, most notably the Gramm-Leach-Bliley Act (GLBA) and the Federal Trade Commission (FTC) Act, alongside state-level data protection statutes. These laws mandate rigorous administrative, technical, and physical safeguards to ensure the absolute confidentiality and security of customer nonpublic personal information. The occurrence of a data breach of this magnitude serves as a strong indicator that the institution may have failed to implement adequate security controls, such as multi-factor authentication, network segmentation, robust encryption, or timely software patching, thereby violating its legal duties to its depositors and account holders.

Receiving a data breach notification letter from Centennial Bank is a formal admission that your private, sensitive information was compromised as a result of corporate negligence. Legally, the receipt of this letter establishes the necessary standing to participate in a class action lawsuit aimed at holding the institution accountable for failing to protect your data. Under applicable legal standards, victims are not required to prove that they have already suffered actual financial theft or out-of-pocket losses to seek legal recourse; the increased and imminent risk of future identity theft is sufficient. Our law firm is actively investigating this data breach on a contingency fee basis, meaning there are never any upfront out-of-pocket costs, and you pay nothing unless we successfully recover compensation on your behalf.