Identify whether a system is in PCI DSS scope by tracing storage, processing, transmission, and security impact.
The reframe: A system can be in PCI scope without storing card data. Map the card data path Start with the obvious: payment pages, payment APIs, databases, queues, logs, batch jobs, file exports, and support tools. Mark where cardholder data is stored, processed, or transmitted. If you cannot show the path, you cannot defend the scope. Map the control path Next, mark systems that can administer, deploy, authenticate, monitor, scan, or log the CDE. These systems may be security-impacting even when they never touch PAN. Access to them can become access to the CDE. Prove the boundary If a system…
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