I've not looked at this dialog for some time, from what I was aware there used to be quite a number of signatures listed here, but after a clean reinstall of Norton 8.6.2 today I've discovered that only 1 signature is present "ARP Cache Poison", I've also confirmed this behaviour doing a fresh install of 8.6.2 on a Mac which has never had norton installed on it before.
Is this behaviour correct? I would have expected more than just the one vulnerability?
Matt