PCI DSS DMARC Requirement: What Section 5.4.1 Requires
meysamazad
12 points
6 comments
July 24, 2026
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Discussion Highlights (5 comments)
john_strinlai
this article takes more time to read than dmarc takes to implement
CodesInChaos
> The best practice is a policy banning PAN over email, instant messaging, SMS, and chat entirely. Sounds silly to me. A PAN should never even touch an employee's computer.
tptacek
Kind of a weird post, since it acknowledges in the first 1/3rd that you don't need DMARC for PCI compliance.
fragmede
two words: compensating control. (But also setup dmarc)
yonatan8070
Took me too long to realize this has nothing to do with the Peripheral Component Interconnect or Direct Memory Access