Check out FlowingData’s visual version of the largest data breaches of all time. The website and content is the work of Nathan Yau, a Ph.D. candidate in statistics. In his own words “I live and breathe data… I want to make data available and useful to those who aren’t necessarily data experts; I think visualization plays a major role in this”.
(To understand the visualization, it helps to know that each square = 1 million records, and that Green = Hacked, Blue = lost, Grey = stolen, and Pink = Fraud.
Pulling Sony breaches out uniquely, Yau illustrates an abysmal 3-month mess.