Leeson proves that it is worth the risk when it comes to securities fraud. The place where you make the most money and get into the least trouble, you go to a cushy Category C prison, in the UK, or a minimum security federal prison, in the US, with a bunch of other non-violent White men.
Not that Leeson would have made much had he got away with it (considering his escapade cost £800mn and he was only eligible for a six figure bonus), what perplexes me is that he was reporting the profits back to Barings HQ in London. This seems odd for two reasons, firstly his huge profits were considerably more than an arbitrageur should have been making thereby drawing suspicion to himself when reporting them, secondly if he was meant to be making $1 million a month and he was actually, due to his use of leverage and his directional bets, making $100 millon why not just claim the $1 million and keep the remainder when he liqudiated his position? Perhaps it was more about pride and status than money itself.