Tagged “pci-dss”

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2 articles

23 May 2026 · 12 min read

PCI DSS 4.0, cyber-insurance and email authentication

PCI DSS 4.0 Requirement 5.4.1 and cyber-insurance questionnaires now treat anti-phishing as a measurable control. Here is exactly how that intersects with DMARC, SPF and DKIM, what counts as evidence, and how to reach enforcement without breaking your own mail.

14 May 2026 · 13 min read

Email authentication for financial services

For banks, insurers and fintechs, DMARC, SPF, DKIM, MTA-STS and BIMI are anti-fraud and brand-protection controls, not deliverability tweaks. How to meet regulatory expectations and reach p=reject across a multi-vendor estate without breaking OTP or statement mail.