Escape Notice?
 

I am really loving this game! Thanks so much for the folks who've been answering my questions!

How's Escape Notice work?
Does it only have effect when you're not attacking?

As an archer that would rather sit in sit in the shadows and snipe off individuals from a group, does it do anything useful? Or is the fact I just attacked a guy a meter away from another guy negate the effect?

How does it work with equipment that randomly produce frost novas? I'd think explosions emanating from someone would pretty well negate any kind of "escape notice" effect, but I dunno. How's it implemented?

Ah, I just found the stat & tooltip under Character Sheet: Other Stats.
Escape Notice = the distance from which monsters notice you.

Yeah, any time you damage a monster they will notice you, assuming they live through the attack. :)