Question 390
During a FortiAnalyzer 7.6 analytics review, the team discovers: A prior week's domain indicator still appears in old case notes even though current threat intelligence no longer lists it. Which analysis correctly identifies the underlying operational gap?
Explanation
Correct Answer
The underlying principle is: Historical indicator matches and current intelligence status can differ as feeds evolve; neither should silently replace the other. Address this by: Compare original indicator definition time with the current feed and retain the case evidence provenance. The confirming operational observation is: The case preserves the historical reason for the match and clearly separates current classification.
Incorrect Answers
Endpoint addresses can change while host and user identities remain consistent, so an IP-only pivot can truncate a case timeline. “Correlate log host identity, authenticated user, DHCP records and observed address changes within the relevant period” would remedy that alternative situation, but it would not correct the present issue: historical indicator matches and current intelligence status can differ as feeds evolve; neither should silently replace the other.
“Group supported malware or endpoint logs by hash and correlate host, user, time and delivery method” is the supported response when hash equality identifies matching file content but does not alone establish when or how each endpoint obtained it. Here the decisive response is “Compare original indicator definition time with the current feed and retain the case evidence provenance”, so that different intervention does not meet the stated requirement.
The same private IP can exist in multiple isolated networks, so source IP without ADOM, device or VDOM is ambiguous. “Restrict events by tenant ADOM, device and VDOM before pivoting on the private source address” applies to that other condition. The reported evidence is a prior week's domain indicator still appears in old case notes even though current threat intelligence no longer lists it; this alternative would address the wrong dependency.