Which of the following is NOT a benefit of implementing network segmentation in PCI DSS compliance?

Implementing network segmentation offers numerous benefits within the context of PCI DSS compliance, particularly in terms of security and efficiency. Enhanced security for cardholder data is a fundamental reason for segmentation; it reduces the attack surface by isolating sensitive information, thereby making it more challenging for unauthorized users to gain access. By limiting the scope of PCI DSS requirements to only certain segments that handle cardholder data, organizations can significantly reduce their compliance costs. This streamlining can lead to lower expenses associated with audits and assessments.

Improved incident response times can also be attributed to network segmentation. By categorizing the network into separate segments, organizations can quickly identify and isolate potential breaches or incidents. This helps in containing threats before they spread to the entire network.

In contrast, increased access to all network areas does not align with the principles of network segmentation. In fact, one of the main goals of segmentation is to limit access to specific areas of the network based on need-to-know principles. Being able to access all network areas would undermine the security and risk management benefits that segmentation provides. Therefore, this option correctly identifies a scenario that is contrary to the benefits of segmentation.