Question 480
An infected remote laptop continues beaconing to known malicious infrastructure after a basic file quarantine. Which Cisco security control or operational response BEST addresses the stated need?
Explanation
Correct Answer
Isolate high-risk endpoints using approved EDR response while preserving evidence and controlled paths for incident handling. This control addresses the failure mechanism and narrows the enforcement boundary. Endpoint isolation contains spread but can interrupt critical operations; response must balance urgency, containment scope, and evidence preservation. Confirm pre-change conditions using: Inspect endpoint detection confidence, host role, active communications, isolation capabilities, and forensic evidence collection. Situation: An infected remote laptop continues beaconing to known malicious infrastructure after a basic file quarantine.
Incorrect Answers
Scope endpoint detection exclusions narrowly and verify business application behavior after updates without disabling broad antimalware protections. This response applies to Secure Endpoint response exclusions and policy safety, not the controlling requirement in this case. Broad folder or process exclusions can create lasting blind spots; false-positive tuning requires evidence and defined review dates. For this scenario, the targeted action is: Isolate high-risk endpoints using approved EDR response while preserving evidence and controlled paths for incident handling. Situation: An infected remote laptop continues beaconing to known malicious infrastructure after a basic file quarantine.
Prioritize Secure Endpoint alerts by severity, current host risk, file action, correlated detections, and business criticality. This response applies to Endpoint malware event prioritization, not the controlling requirement in this case. Alert counts alone do not establish incident severity; containment status and evidence of active execution change urgency. For this scenario, the targeted action is: Isolate high-risk endpoints using approved EDR response while preserving evidence and controlled paths for incident handling. Situation: An infected remote laptop continues beaconing to known malicious infrastructure after a basic file quarantine.
Choose endpoint prevention, behavioral detection, and response capabilities based on business risk and investigation needs rather than equating antivirus with EDR. This response applies to Endpoint protection versus detection response, not the controlling requirement in this case. EPP focuses preventative controls and EDR records and investigates suspicious endpoint activity and supports response; the capabilities overlap but are not interchangeable. For this scenario, the targeted action is: Isolate high-risk endpoints using approved EDR response while preserving evidence and controlled paths for incident handling. Situation: An infected remote laptop continues beaconing to known malicious infrastructure after a basic file quarantine.


