Many would say that controlling costs is the toughest challenge facing the U.S. healthcare industry. But safeguarding patient information in a digital world isn't proving to be much easier. Consider this: In the two years since the Department of Health and Human Services mandated public disclosure of any exposure of data involving 500 or more patients, breaches affecting more than 10 million individuals have been reported. And most people think that's just the tip of the iceberg—many other individuals likely have had their data compromised and many more will in the future. Why are medical records so vulnerable?