Question 300
During a FortiAnalyzer incident investigation, the analysts observe: The security team schedules a daily backup of analytics evidence but never validates that an archived log set can actually be read. Which technical explanation most directly accounts for these observations?
Explanation
Correct Answer
The underlying principle is: A completed backup job is not proof that the required stored log files are intact and recoverable for investigation. Address this by: Perform a controlled restore of representative log archives into a supported isolated investigation workflow. The confirming operational observation is: The restored messages match source hashes or expected records and can be examined in the supported tools.
Incorrect Answers
Delayed delivery collapses receipt timestamps even when the original event timestamps are spread over an earlier interval. “Analyze source event timestamps and receipt delay separately while retaining the queue and forwarding context” would remedy that alternative situation, but it would not correct the present issue: a completed backup job is not proof that the required stored log files are intact and recoverable for investigation.
“Estimate required retrospective hunt windows and adjust retention with approved archival or capacity measures first” is the supported response when historical threat hunts require suitable retained records, and discarding indexed logs reduces the evidence available to future searches. Here the decisive response is “Perform a controlled restore of representative log archives into a supported isolated investigation workflow”, so that different intervention does not meet the stated requirement.
HA failover changes the active origin of device logs, so filtering by only the former active member can hide valid post-failover activity. “Verify the cluster member identifiers and expand approved searches to the appropriate HA source identity and period” applies to that other condition. The reported evidence is the security team schedules a daily backup of analytics evidence but never validates that an archived log set can actually be read; this alternative would address the wrong dependency.