Articles tagged pci dss v401
Using Network Segmentation to Reduce PCI DSS Scope
What network segmentation does under PCI DSS v4.0.1: why the standard does not require it but scope depends on it, what counts as isolated, and the testing and yearly scope confirmation that keep it counting.
PCI Compliance 101: What PCI DSS v4.0.1 Is and How You Meet It
The basics of PCI DSS v4.0.1 for a business that takes cards: who it applies to, what counts as in scope, which card data may be stored, how compliance is validated, what changed in v4.x, and what has to happen between assessments.
Understanding PCI DSS 11.6.1: Detecting Changes to Payment Pages
What PCI DSS v4.0.1 Requirement 11.6.1 asks for: a mechanism that alerts on unauthorised changes to a payment page's security-impacting HTTP headers and scripts as the browser receives them, how often it must run, who it applies to since SAQ A changed in January 2025, and the techniques the standard names.
HSTS and PCI DSS: What HTTP Strict Transport Security Does for a Payment Site
What HTTP Strict Transport Security protects against, how it relates to PCI DSS v4.0.1 Requirements 4.2.1 and 11.6.1 even though the standard does not name it, and how to deploy it and the preload list without breaking a site.
Should my Service Provider be PCI Compliant?
The PCI Security Standards Council's answer: Requirement 12.8 does not make your service providers validate as compliant, but any requirement a provider meets for you counts in your assessment. What to ask for, what the standard asks of them, and how to record who does what.
How iframes Simplify PCI DSS Compliance for E-commerce Businesses
How embedding a payment provider's form in an iframe affects PCI DSS v4.0.1 scope: which SAQ each e-commerce integration leads to, what the SAQ A script criterion asks of an iframe merchant under the Council's FAQ 1588, and what an iframe does not protect.
Storing CVV: What Merchants Need to Know
What PCI DSS v4.0.1 says about the card verification code: it may not be stored once authorisation completes, what is allowed before that, where it tends to hide, and what counts as a CVV and what does not.