CSP in 2025: What It Solves and Doesn't for Client-Side Risk
Preparing for PCI DSS 4.0.1 can feel complex, especially when so much of compliance now lives in the browser. Your assessor’s main goal is simple: to confirm that your controls are not only in place but also working as intended. Two requirements matter most for e-commerce environments. Many organizations start with Content Security Policy (CSP). It’s a sensible place to begin because CSP gives browsers a set of rules about what content to load.