How often do we think - "Wow I never thought anyone would steal that!"

I was talking to someone in the banking industry this weekend. You know how a lot of companies take images of checks instead of the actual paper? Well people have figured out how to use that to double up on the deposit. For obvious reasons he did not get into the details, but essentially they deposit the check at one bank, and then they go to another bank and do the same thing. I don't get how they aren't getting caught prior to being able to use the money they get, but he said his bank gets hit for a huge amount of money each year, as this is now fairly common. Criminals can think up all kinds of ways to steal our data, money, identity... Criminals are people. Companies employ people.