If an IS auditor finds a logging failure while reviewing server logs, what is the best course of action?

The best course of action in the scenario where an IS auditor discovers a logging failure while reviewing server logs is to expand the sample of logs reviewed. This approach allows the auditor to gather more comprehensive data regarding the extent and nature of the logging failure. It provides the opportunity to understand if the issue is isolated or if it affects a broader range of logs and possibly other systems.

By expanding the sample, the auditor can assess the consistency and reliability of the logging mechanisms and determine if they are functioning as intended. This deeper analysis can lead to more informed and accurate conclusions about the overall effectiveness of the logging practices, and it can help identify any systemic issues that need to be addressed.

Addressing the implications of reviewing a broader sample might provide evidence for appropriate corrective actions, whether through discussions with management or through formal findings. Ultimately, this step is critical for ensuring that the audit process is thorough and effective in identifying risks related to logging inadequacies.