An economic theory that could be related to this letter is rational choice. The company that experienced the breach may have made the choice to spend less money on a cheaper antimalware program that was unable to detect the malware that was responsible for the breach. Another economic theory that could be related to this letter is Marxian economic theory. The company that was breached was powerful, therefore they were able to collect a lot of information from less powerful individuals, or their customers. Another theory that could be related to this letter is liability. Since the company was collecting information about their customers and was breached, they should be liable for any damages that occur as a result of the breach.