Social media aren't just coming - they're here. And senior leaders need to understand how to maximize Facebook, LinkedIn, Twitter and other popular sites, as well as how to protect their organizations from very real security risks.

In an exclusive interview, Prof. Sree Sreenivasan, Dean of Student Affairs at the Columbia Graduate School of Journalism, discusses:

Sreenivasan is a technology expert and dean of student affairs at the Journalism School, where he teaches in the digital journalism program. He specializes in explaining technology to consumers/readers/viewers/users. For more than eight years, he served as technology reporter for WABC-TV and WNBC-TV in NYC and now occasionally appears on various TV shows to talk tech. For more than six years, he wrote a Web Tips column for Poynter.org. He has written articles for The New York Times, BusinessWeek, Rolling Stone, National Journal, Bloomberg, Forbes, and Popular Science. In March 2004, Newsweek magazine named him one of the nation's 20 most influential South Asians; and in 2009, AdAge named him "one of 25 media people to follow on Twitter." You can find him on Twitter and his Twitter Guide for Newbies and Skeptics.