PCI Data Security Standard Practice Test

Audit trails contain detailed records of who did what, when, and from where within the system, including potentially sensitive activity. Because this information can reveal security weaknesses and, in some cases, cardholder data, access must be tightly controlled. Limiting access to authorized personnel only ensures those who genuinely need to review logs for security monitoring, incident response, or regulatory compliance can do so, while reducing the risk of tampering, leakage, or misuse by others. It also supports accountability, since actions in the logs can be tied back to a specific role or individual, and protects the integrity of the logs by making unauthorized modifications harder. In practice, this means implementing least-privilege access, strong authentication, and monitoring around who can view audit trails; broader access (everyone with system access, all employees, or external partners without strict controls) would expose sensitive information and undermine security.