I have yet to see any hacks personally. Maybe something that i dont notice perhaps.
I have been accused of hacking once though, pretty funny since i dont know jack about computers.
I feel like 85% of accusations are just QQ players that lost.
Ebon Hawk - doesn't happen offten, but I've seen void door bombs just disappear even with 4 or 5 guys aoe'ing the hell out of it.