Well, it seems exploits are back on the menu! We have a particularly nasty one this time, with players being completely immune to any damage in PvP areas.
Luckily this isn’t transferable to dungeons or other content. But in the PvP zones there are already players running around farming and taking down others while not taking any damage whatsoever, as spotted by fficient-Ad-1177 and many others. It seems especially popular on the Korean servers as well, as players farm the PvP zones and other players.
There’s not much that can be done when meeting a player exploiting this, other than reporting them on the forums, so hopefully Blizzard will fix this quickly.