There is a joke in the cybersecurity community that there are two kinds of companies: those that know they’ve been hacked, and those that haven’t found out yet. The Target Corporation learned this the hard way during the busy holiday season of 2013, when 110 million customers’ information was compromised. Harvard Business School professor Suraj Srinivasan discusses his case entitled “Cyber Breach at Target,” which explores one of the largest cyber breaches in history, analyzing why failures happen, who should be held accountable, and how preventing them is both a technical problem and a matter of organizational design.