The letter linked below is a sample letter sent to a customer informing them of a breach. Some economic theories that relate to this are Marxian economic theory and Rational choice economic theory. Marxian theory applies because it states that those with power (in this case the hackers who caused the breach) take advantage of those without power (the company and the customers). Rational choice theory relates because the business decided to disclose the breach to the customer. Rational choice states that people make decisions in their best interest. While the company might lose some value because people know it was breached, it means less people will be compromised and the company will not have lost as much if it is later discovered they were breached and did not disclose it.
https://dojmt.gov/wp-content/uploads/Glasswasherparts.com_.pdf