The cost of recovering from a single data breach now averages $6.3 million-that’s up 31 percent since 2006 and nearly 90 percent since 2005, according to the Ponemon Institute, which studies privacy and information management. Two-thirds of that cost is spent recovering business that’s lost after a breach, a cost that has risen 30 percent since last year. More customers stop doing business with a company after their information is exposed, and it’s getting more expensive to replace them. They spent an average of $197 per lost record investigating the breach, notifying customers, restoring security infrastructures and recovering lost business. Breaches by third parties-outsourcers or members of a company’s supply chain-were the second biggest cause of security compromises and are more expensive.