Why Content Security Policy Fails PCI 6.4.3 (And What QSAs Accept Instead)
Content Security Policy looks like it was designed for PCI Requirement 6.4.3. You define which domains can load scripts on your payment page, the browser enforces it, and unauthorized code gets blocked. For teams drowning in third-party JavaScript, CSP feels like the obvious answer. Then you get to your audit, and the QSA starts asking questions CSP can’t answer.