Tim Belden, the head of trading at Enron, was one of the first executives to be prosecuted and to admit wrongdoings at Enron. He pled guilty on charges of conspiracy to commit wire fraud as part of a plea bargain and agreed to cooperate with the authorities to help convict many top Enron executives. He’ll be the starting point of our fictive investigation. Let’s see if we can find relevant information just by analysing his email activity.
The first problem we have to deal with here is that a lot of emails he sent and received were directed to many recipients. The ones that are really interesting to us as investigators are his personal emails. An easy and quick way to isolate them is to expand only the least connected nodes in his sent and received emails. That way, we find the interlocutors with whom he had direct one-to-one contact. This method is really effective if we do not need a 100% precision level to explore the data.
A quick look at the graph shows that he used his email address primarily to send emails to the Enron’s World Trade center Office: ‘firstname.lastname@example.org’. But he did send a few emails to individuals inside the company as well.