10 API Security Best Practices for Achieving PCI DSS 4.0.1 Compliance
PCI DSS 4.0.1 is the first major standard to name API business logic as an attack type you must address. Requirement 6.2.4 lists attacks on business logic, including attempts to abuse or bypass application features through the manipulation of APIs, alongside injection and access control flaws. The timing matters. All requirements, including the ones that were future-dated, have been mandatory since 31 March 2025. Your next assessment will test controls that were optional a year ago. The reason is simple.