This case study details hibank Indonesia's implementation of Imperva Application Security to enhance its API threat detection and reduce operational costs. As a leading financial institution, hibank faced increasing API security risks and compliance pressures due to the growing prevalence of cyber threats targeting the banking sector. The study outlines the challenges hibank encountered, including the inadequacy of traditional security methods in addressing evolving threats and the need for compliance with strict regulatory standards. The deployment of Imperva API Security was completed within three months, providing advanced protection and compliance readiness. As a result, hibank experienced a 30% reduction in time spent on API threat detection and a 20% decrease in operational costs. The implementation has strengthened hibank's API security framework, reinforcing customer trust and ensuring compliance with data protection laws. The case study emphasizes the importance of effective API security measures in maintaining secure financial transactions and enhancing customer satisfaction.