I'm sure it happens. According to what I've seen on TV, all you need to do is stick a thumb drive in a laptop and utter the magic incantation "OK, I'm in" and y

I'm sure it happens. According to what I've seen on TV, all you need to do is stick a thumb drive in a laptop and utter the magic incantation "OK, I'm in" and you can either download the entire content of the network or implant a virus in the time it takes for someone to come back into the room.