In our modern information societies, we not only use and welcome computers; we are highly dependent upon them. There is a downside of this kind of progress, however. Computers are not 100% reliable. They are insecure. They are vulnerable to attackers. They can either be attacked directly, to disrupt their services, or they can be abused in clever ways to do the bidding of an attacker as a dysfunctional user. Decision-makers and experts alike always struggle with the amount of interdisciplinary knowledge needed to understand the nuts and bolts of modern information societies and their...