The Kelly Criterion can be used to analyze the options from the defender’s point of view, e.g.: • pay for security that prevents attacks = lg[company value – c

The Kelly Criterion can be used to analyze the options from the defender’s point of view, e.g.: • pay for security that prevents attacks = lg[company value – cost of security] • don’t pay for security = attack probability × lg[company value – cost of dealing with attack] + (1 – attack probability) × lg[company value]