A person who is too cheap to get internet service of their own so they go to Krystals, Starbucks, Barnes and Noble, etc. just for the free Net. Such as me :)
Tightwad Tim is such a netbandit. He would rather drive to town for free internet than have it at home!
When someone goes into a self serve restaurant and asks for a cup of water but fills the cup with soda, gets caught, and is banned from the restaurant for life.
Karen aka the soda bandithas been banned from many restaurants over the years for taking soda after she asked for a cup of water.