Question 420
A multi-device security analysis reveals this requirement: A chart labeled unique users counts every session as a separate user, inflating totals during a login burst. Which ongoing safeguard best addresses the original risk?
Explanation
Correct Answer
Define metric semantics for counts, distinct entities, and sessions in report specifications. This long-term control addresses the recurring risk. The technical reason is: A count of events is not a count of unique principals unless the query groups or deduplicates identities. A later acceptance test still needs to confirm: Two sessions by one test user count as one unique user in the corrected report.
Incorrect Answers
This safeguard, “Regression-test report grouping fields whenever parsers are updated”, reduces a different source-defined risk: A report's bar chart suddenly shows one unclassified category after a log parser update, while raw event counts stay consistent. That risk depends on: A grouping field that becomes null or changes meaning can collapse distinct rows into an unknown category. The recurring problem here is a chart labeled unique users counts every session as a separate user, inflating totals during a login burst. The originally selected control “Define metric semantics for counts, distinct entities, and sessions in report specifications” is more specific because a count of events is not a count of unique principals unless the query groups or deduplicates identities.
This safeguard, “Test output-profile delivery after mail server or recipient changes”, reduces a different source-defined risk: The weekly report email is missing, but the report file exists in FortiAnalyzer's completed task history. That risk depends on: Report generation and outbound delivery are separate stages; a completed file can fail to reach recipients. The recurring problem here is a chart labeled unique users counts every session as a separate user, inflating totals during a login burst. The originally selected control “Define metric semantics for counts, distinct entities, and sessions in report specifications” is more specific because a count of events is not a count of unique principals unless the query groups or deduplicates identities.
This safeguard, “Audit device-group membership when renaming or replacing reporting sources”, reduces a different source-defined risk: An incident report appears to omit a compromised IP because the source filter was set to a similarly named FortiGate group. That risk depends on: Report device filters select specific logging sources; similar names do not guarantee matching source membership. The recurring problem here is a chart labeled unique users counts every session as a separate user, inflating totals during a login burst. The originally selected control “Define metric semantics for counts, distinct entities, and sessions in report specifications” is more specific because a count of events is not a count of unique principals unless the query groups or deduplicates identities.