PCI DSS 4 Compliance requires a clear understanding of the latest requirements, particularly Requirement 6.4.3 and 11.6.1, which emphasize the importance of JavaScript monitoring for maintaining secure payment environments. For AppSec, Infosec, or ISA/QSA professionals, staying on top of PCI DSS 4.0.1 can feel overwhelming, but protecting payment card data leaves no room for errors.