TLDR

You said that you identified a level 1 alt, that he was using to track you, correct? This IS a violation, and is the primary reason you cannot roll both horde and alliance toons on the same server, on the same account. Having /who information on the opposing faction IS an unfair advantage.

I have reported many people for doing this, and have never heard back from them. Normally these attempted greifers are so unimaginitive, they use a similar name on their alt used to track me, or are dumb enough to begin verbally harassing me.

My favorite was the 70 hunter who tried to gank my shaman when we were 66. He tried and tried and tried (5 or 6 times iirc) but kept failing >.< So he created a toon named Bovidaesucks (or something to that effect) He spammed me, he spammed trade chat, he got reported, and was removed from my friends list, because "that character no longer exists" GG