I just finished watching the episode "Deadlock". Toward the end, Vidiians board the ship to steal organs. Oddly, they know the name used for every species on the ship.
That they know what an Ocampa is a bit surprising since most of them live underground for generations, but it's still believable. After all, they do share the same quadrant. That they know what humans are is odder, but still believable. The Voyager crew might have used that term to introduce themselves in the past. However, how do they know what a Vulcan is?
When they scan Tuvok, they say he's a Vulcan, but how do they know that word? Has Tuvok ever used the Vulcan word infront of a Vidiian or is that just the writers messing up?