Tag: dmarc

PCI DSS v4.0.1: Anti-Phishing Requirement Now Enforced (Nov 2025 Update)

The PCI DSS v4.0.1 anti-phishing mandate (Req. 5.4.1) has been fully enforced since March 31, 2025. Learn what auditors expect now and how to close remaining gaps with SPF, DKIM, and DMARC.