CNET News
http://news.cnet.com/8301-1009_3-10190978-83.html
Of consumers who have been notified that their data may have been exposed during a data breach, 20 percent claim they ended their relationship with the company breached but the actual churn rate is less than 7 percent, said Deirdre Mulligan, assistant professor at the School of Information at the University of California at Berkeley.