Fidelity Bank Data Breach: Nigerian Bank Denies Allegations, Contests ₦555.8 Million Fine

**Executive summary:** The article covers a regulatory dispute in which the Nigerian Data Protection Commission alleges Fidelity Bank processed customer personal data without informed consent—citing app cookies and non-compliant third-party processors—and levied a ₦555.8 million fine; Fidelity Bank denies a breach, asserts the account process was incomplete and closed, and is contesting the commission's findings, with the outcome carrying reputational and compliance implications for the banking sector in Nigeria.