What happens when the indicator of compromise (IOC) engine on FortiAnalyzer finds web logs that...

Exact Extract: Study Guide p.130-p.132: blacklisted IP or DGA matches produce an Infected verdict and appear under Compromised Hosts.

Technical Deep Dive: The correct answer is B. When IOC analysis finds web logs matching blacklisted IP addresses or domain-generation algorithm patterns, FortiAnalyzer treats that as a real breach and creates/updates an infected compromised-host entry for the endpoint. Option A describes suspicious-list behavior, where FortiAnalyzer flags the host for further analysis. Option C is wrong because blacklisted matches are classified as Infected, not merely Suspicious. Option D overstates the automatic endpoint response; quarantine is a separate response action, not the IOC engine classification itself.