Payment Card Industry (PCI) Data Security Standards Practice Test

Which scenario describes a shared hosting environment that meets PCI DSS requirements?

1. Only designated users from each hosted entity have write access to shared system binaries

2. Each hosted entity's applications are run under the hosting provider's administrative account

3. A hosted entity's log files can only be viewed by other entities hosted on the same server

4. A hosted entity's applications are run under a unique user ID assigned to that hosted entity

The correct answer is: A hosted entity's applications are run under a unique user ID assigned to that hosted entity

In a shared hosting environment that meets PCI DSS requirements, it is essential for each hosted entity to maintain distinct separation to ensure that sensitive payment card information is adequately protected. Running a hosted entity's applications under a unique user ID assigned specifically to that entity ensures that there is proper segmentation of access and permissions. This approach allows for effective monitoring, management, and safeguarding of data pertaining to each entity, which is critical for compliance with the PCI DSS. Having unique user IDs enhances security by limiting the risk of unauthorized access to data or systems belonging to other hosted entities. This segregation helps to prevent one entity’s vulnerabilities from impacting another, ultimately ensuring that each entity is responsible for their own security measures and data protection, which is a fundamental aspect of the PCI DSS. In contrast to a single administrative access point, which could potentially expose all entities to risks, or shared log access that could breach confidentiality, maintaining unique identities addresses critical control requirements outlined in the PCI DSS, such as access control measures and monitoring. This strategy effectively aligns with the standards to protect cardholder data and maintain a secure hosting environment.