Well, lets just say they guy said he makes almost $30,000J a day on the side cause he's one of the guys that check the weight. He said that yes if a bag is not locked they will go thru it, people get nuff phones etc, and sell them. If someones bag is overweight he tells them how much it will be according to the airline, then if the person says they can't pay he tells them something lower and pockets the money!
He said they only make $4000J a week so any extra money they make is great. I would rathger pay a guy $20US to go in his pocket than $100 for extra baggage!