Question 560
Consider the following Security Fabric analytics issue: A newly imported intelligence indicator is marked malicious but has no corresponding observed event in the environment, and an analyst claims an actual breach occurred. Which ongoing safeguard best addresses the original risk?
Explanation
Correct Answer
Require observation-backed evidence for confirmed incident status. This long-term control addresses the recurring risk. The technical reason is: Intelligence about an indicator is not evidence that the environment encountered it; observation and reputation are separate facts. A later acceptance test still needs to confirm: The case classification distinguishes an unobserved threat indicator from a verified matched detection.
Incorrect Answers
This safeguard, “Review export fields and sensitive-data handling before sharing incident documents”, reduces a different source-defined risk: A SOC manager needs to export one incident's timeline and event evidence for an internal auditor without providing unrestricted access to all FortiAnalyzer logs. That risk depends on: Incident export packages case-level evidence and annotations rather than exposing the entire log repository. The recurring problem here is a newly imported intelligence indicator is marked malicious but has no corresponding observed event in the environment, and an analyst claims an actual breach occurred. The originally selected control “Require observation-backed evidence for confirmed incident status” is more specific because intelligence about an indicator is not evidence that the environment encountered it; observation and reputation are separate facts.
This safeguard, “Check for open matching cases before creating separate incidents for correlated activity”, reduces a different source-defined risk: Three related intrusion detections belong to an already open investigation, yet the operator creates three independent tickets with no shared context. That risk depends on: Incident event association brings multiple observations into one investigation while preserving the original event records. The recurring problem here is a newly imported intelligence indicator is marked malicious but has no corresponding observed event in the environment, and an analyst claims an actual breach occurred. The originally selected control “Require observation-backed evidence for confirmed incident status” is more specific because intelligence about an indicator is not evidence that the environment encountered it; observation and reputation are separate facts.
This safeguard, “Validate indicator types and formats when creating incident evidence records”, reduces a different source-defined risk: A suspicious file hash from a malware log is attached to an incident as a URL indicator, causing threat enrichment to return irrelevant results. That risk depends on: Indicator enrichment routes lookups by type and value; mixing hashes with URL types changes the query meaning. The recurring problem here is a newly imported intelligence indicator is marked malicious but has no corresponding observed event in the environment, and an analyst claims an actual breach occurred. The originally selected control “Require observation-backed evidence for confirmed incident status” is more specific because intelligence about an indicator is not evidence that the environment encountered it; observation and reputation are separate facts.