Which of the following describes the three components of PCI DSS?

• A. Handling credit card data from customers, securely collecting and transmitting card information
• B. Storing data securely
• C. Validating annually that security controls are in place
• D. Handling credit card data from customers, securely collecting and transmitting card information, storing data securely, and validating annually that security controls are in place

Answer: (D)

PCI DSS protects cardholder data across its entire lifecycle. It focuses on how data is handled, how it’s stored, and how security controls are regularly validated. Handling card data securely means protecting it during collection and transmission—using secure networks, encryption in transit, and safe processing practices so the data isn’t exposed to unauthorized parties. Storing data securely means keeping only what’s necessary, encrypting stored data, applying strict access controls, and following data retention policies to prevent unnecessary exposure. Validating annually means proving, through an official assessment or annual checks, that the security controls in place actually meet PCI DSS requirements and remain effective over time.

Together, these three components cover the full protection lifecycle. Relying on just one or two aspects leaves gaps: securing data in storage without protecting it during transmission or without regular validation won’t meet the framework’s overall goal of continuous, comprehensive protection.