Refer to the exhibits.

In this scenario:

FortiGate + FortiAnalyzer are part of theSecurity Fabric

AnAutomation Stitchis configured:

Trigger:Compromised Host – High(IOC from FortiAnalyzer)

Action:Quarantine on FortiSwitch + FortiAP

A test device10.0.2.1visits a malicious website.

FortiAnalyzer logs show the event, butFortiGate does NOT quarantine the device.

This means theautomation did not receive an IOC trigger, OR theFabric did not classify it as a compromise.

Let's evaluate each answer option.

✅C. The malicious website is not recognized as an indicator of compromise (IOC) by FortiAnalyzer.

✔Correct.

For FortiGate to quarantine a device:

FortiAnalyzer must classify the event as aCompromised Host → High / Medium / Critical

FortiAnalyzer must generate anIOC event

FortiGate must receive that IOC through the Fabric

Even though the FAZ log shows:

Action = blocked

Category = Malicious Websites

→ That doesNOTautomatically mean an IOC was generated.

A blocked website event isnot always an IOCunless:

It is included in theIOC database

FAZ’sAnalytics / UTM / IOCengine marks it as a compromise

Thus, if FAZ only logs a “Malicious Website” event butdoes not classify it as an IOC,