In 2014, Home Depot was hacked—and 56 million credit cards were compromised. It was one of the largest data breaches to befall a major corporation. Then-CEO Frank Blake wanted to preserve Home Depot's relationship with its customers, so he came up with a plan: Unlike other companies in this situation, who hid the breaches from their customers for months or even years, he was going to be radically transparent about the problem. This is the story of what happened next.