Marilith possible hackers??

[Pratini]

I was in Ul'dah and started noticing players appear then disappear in three different zone entrance/exit. The players all have random letters for names and listed as Wanderers. I stayed and watched one at the zone entrance to Eastern Thanalan and the player continously appears then disappeared after a few seconds or clipped through the ground and then disappeared. I haven't been playing very long and couldn't find a way to report the suspicious activity. I'm assuming it's hackers based on the behavior. Is there a way to report? Or will reporting it even do anything? Thanks

Unfortunately its everywhere, not only on Marilith.