You sir are hilarious. I'm pretty sure loftar is the only person that can tell if somebody is online in the game. And as far as bug reporting goes, check the bug tracker. You will see that every exploit that has been detected during this beta thus far, has been reported by us.
Oh and btw, there wasn't any exploit with the 'multiple claim abuse mechanic'. You said it right there 'multiple claim [abuse] mechanic'.