PCI DSS DMARC Requirement: What Section 5.4.1 Requires (and What It Doesn’t)
Summary
The article explains PCI DSS v4.0.1 Section 5.4.1 and clarifies that automated anti-phishing mechanisms are mandatory, while DMARC, SPF, and DKIM are provided as guidance examples rather than strict mandates. It provides a protocol map, enforcement guidance, a step-by-step compliance plan, common audit mistakes, and emphasizes evidence artifacts needed for PCI assessments.