Reed Exhibitions have published a series of podcasts recorded by Hall of Fame speakers at this year's Infosecurity Europe. The subject was "the next big issue in security".
Mine was on data integrity, or rather the lack of it. It's a widespread exposure which I expect will soon become visible to all, though it's still below the radar of most organisations. If you thought confidentiality was a tough problem to address, just wait until you try responding to attacks on data integrity.