Question 150
At Elmwood Manufacturing, a team reports that it corrected the following problem affecting industrial analytics and business systems: A SOC identifies a confirmed malicious domain but each security product maintains a different manual blocklist. Which observation BEST verifies that the correction actually worked?
Explanation
Correct Answer
Firewalls and DNS security consume the same current indicator and log their enforcement. This is the decisive evidence for the original problem: A SOC identifies a confirmed malicious domain but each security product maintains a different manual blocklist. It verifies that the intended corrective control—Publish a validated indicator through a managed intelligence feed or shared exchange mechanism—works in the relevant environment; a completed change ticket alone would not prove the outcome at Elmwood Manufacturing.
Incorrect Answers
The pilot shows reduced false positives and blocking tied to analyst-approved confidence. This would be relevant evidence for a different failure: A team assumes every public indicator can be blocked without evaluating potential business impact, usually addressed by Apply observation and risk-based enforcement stages before enabling destructive feed actions. It does not demonstrate that the current problem at Elmwood Manufacturing was resolved. The specific required evidence is: Firewalls and DNS security consume the same current indicator and log their enforcement.
Authorized recipients ingest structured intelligence without receiving protected case data. This would be relevant evidence for a different failure: Security analytics generates detections but incident responders cannot share actionable findings with partner teams, usually addressed by Package sanitized indicators and relevant context into a controlled STIX/TAXII sharing workflow. It does not demonstrate that the current problem at Elmwood Manufacturing was resolved. The specific required evidence is: Firewalls and DNS security consume the same current indicator and log their enforcement.
The expired indicator is withdrawn across consumers without losing the historical investigation. This would be relevant evidence for a different failure: A threat feed delivers repeated stale IP indicators long after infrastructure ownership changes, usually addressed by Enforce indicator TTL and automated expiration with safe review of exceptions. It does not demonstrate that the current problem at Elmwood Manufacturing was resolved. The specific required evidence is: Firewalls and DNS security consume the same current indicator and log their enforcement.