What regulation should an administrator be aware of to protect payment card information?

The correct choice focuses on PCI DSS, which stands for the Payment Card Industry Data Security Standard. This regulation was established to enhance security around payment card transactions and to help organizations protect cardholder information. It sets forth a comprehensive set of security requirements that any entity that processes, stores, or transmits credit card information must adhere to.

Understanding PCI DSS is essential for an administrator because it provides guidelines on how to secure sensitive payment details from breaches and fraud. This includes requirements such as implementing strong access control measures, maintaining a secure network infrastructure, and regularly monitoring and testing networks for vulnerabilities. Ensuring compliance with PCI DSS not only helps protect consumers' financial information but also mitigates the risk of significant financial penalties and damage to the organization’s reputation in the event of a data breach.

Other regulations like GDPR are focused more broadly on data protection and privacy rights in relation to personal data across the EU, rather than specifically targeting payment card information. HIPAA relates to healthcare data protection, while CIS Controls are a set of best practices for cybersecurity but do not specifically focus on payment card data. Hence, the emphasis on PCI DSS makes it the most relevant regulation for this context.