As I’d doubt someone would be stupid enough to openly use hacks knowing the risks of a permanent ban from the game. This is more wanting clarification or some type of video proof. As my gear almost looks “hacked” from how high the stats are. And I’d imagine seeing them have this gear could come off as hacking. This is rare as only about 1-5% of the player base is truly geared enough to handle this content. It sounds as though the op is just breaking into nightmare and ran into someone who was fully geared with the best equipment.