Internet nuisances (6)

I believe the answer is:

trolls

(Other definitions for trolls that I've seen before include "Mythical Scandinavian dwarfs" , "cave-dwellers" , "Ugly creatures in Scandinavian mythology" , "Mythic Scandinavian creatures" , "internet pests" .)

I've seen this clue in the Universal.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.