This white paper explores the API security requirements introduced in PCI DSS v4.0 and how organizations can strengthen payment data protection in an increasingly complex threat landscape. As digital payment systems rely on thousands of APIs to support transactions and services, attackers are increasingly targeting API vulnerabilities to access cardholder data, exploit misconfigurations, and compromise critical infrastructure. PCI DSS v4.0 emphasizes continuous security, flexible compliance approaches, stronger validation methods, and enhanced protections against modern threats such as API abuse. The report highlights key API security considerations and explains how Akamai API Security can help organizations improve visibility, detect risks, reduce vulnerabilities, and maintain secure, com

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