The fraudsters paradigm explained in one book: the bad Apple (rogue executive), the bad Bushel (groups that collude and behave like gangs), and the bad Crop (representing organization-wide or even societally-sanctioned cultures that are toxic and corrosive). As far as fraud and corruption is a nowadays critical issue, understanding what to do about it, is required.
A remarkable statement from the book:
Being curious is indispensable, and asking the right questions is the only way to get to the bottom of things. Once fraudsters realize that they are not dealing with fools, they are usually smart enough to back off. The potential fraud is then nipped in the bud or successfully foiled. The power of asking the right question increases logarithmically as one moves up the organization; indeed, the most important omission is the unasked question.
Didier Lourenço at Galeria Barnadas