PCI DSS 11.6.1 Requirements Explained
For merchants, service providers, and any organization that handles e-commerce payment flows, PCI DSS 11.6.1 is one of the most important requirements introduced in PCI DSS v4.0. It focuses on detecting unauthorized changes to payment pages as they are received by the customer’s browser, helping reduce the risk of payment page skimming, malicious script injection, and browser-side tampering.