What is required for access control measures in PCI DSS?

Access control measures in PCI DSS are critical for protecting cardholder data from unauthorized access. The requirement of limiting access to cardholder data to only those whose job requires it ensures that sensitive information is safeguarded by the principle of least privilege. This principle dictates that individuals should only have access to the information necessary for their specific job functions, thereby minimizing the potential for data breaches or unauthorized access.

By implementing such measures, organizations not only comply with PCI DSS standards but also enhance their overall security posture. This approach mitigates risks associated with insider threats and helps to ensure that any access to cardholder data is justified and monitored.

This specific focus on restricting access based on job necessity fosters accountability and allows for better tracking of who accesses sensitive data, enabling organizations to maintain robust control over their sensitive information.