Alas, it seems we just have to install a firewall and let it protect us.
On ZA, in the Who-is (hacker id) section it clearly states
"You should not assume that individuals listed in this report are responsible for the alert you received on your computer"
as such, reporting them will make no difference, just be assured that Zone Alarm is doing it's stuff and protecting you.
so far since install (about two weeks ago) my ZA has blocked 3070 attempts, 57 of which have been HIGH-RATED. Most of the attempts come from my own ISP anyway
but i just leave alerts turned off and let it get on with protecting me.
i know this isnt an answer but it might give you some peace of mind.