Refer to the exhibit.

The incident shown in the exhibit indicates that a firewall detected malware but could not remediate it. The firewall identified the EICAR_TEST_FILE virus and logged the source IP (10.0.3.10) as the origin of the threat.

To remediate this, the administrator should take action at the network level, specifically using FortiOS to block the source IP address. The option "Run the block IP FortiOS 5.4" provides the ability to block traffic from the infected IP at the firewall level, effectively preventing further threats from that source.