Despite all the books, articles, training, and guidance available from The IIA, not everyone in internal audit is a superstar. In most audit departments, some individuals are great examples of what not to do.
Identifying matching addresses can help in detecting and minimizing the risk of loss due to fraud, but it must be done in a methodical repeatable fashion based on the data available.
Technology changes faster than most of us can react. Even for the most responsive audit departments, it is very difficult to keep up with all of the changes that are available to us.