Adam L. Penenberg is a journalism professor and assistant director of the Business and Economic Program at New York University. A contributing writer to Fast Company, he has also written for Inc., Forbes, The New York Times, Slate, Wired, Economist, Playboy and Mother Jones. A former senior editor at Forbes and reporter for Forbes.com, Penenberg garnered national attention in 1998 for unmasking serial fabricator Stephen Glass of The New Republic. Penenberg's story was a watershed for online investigative journalism and is portrayed in the film "Shattered Glass" (Steve Zahn plays Penenberg).

His first book, Spooked: Espionage in Corporate America (Perseus Books, 2000), was excerpted in the Sunday New York Times Magazine and received a starred review in Publishers Weekly. His second, Tragic Indifference: One Man's Battle With the Auto Industry Over the Dangers of SUVs (HarperBusiness, 2003) was optioned for the movies by Michael Douglas and excerpted in USA Today. Reviewers called it "gripping" (Mother Jones) "dramatic" (Boston Globe), "stinging," "comprehensive" and "disturbing" (Publishers Weekly), a book that has a "narrative with rich, detailed characters" (San Francisco Chronicle) and "offers a comprehensive look at a notorious corporate scandal and a courtroom drama and investigation that ends in triumph for the many victims" (Booklist). His latest book is Viral Loop: From Facebook to Twitter, How Today's Smartest Businesses Grow Themselves (Hyperion, 2009) has been excerpted in Fast Company and TechCrunch in the U.S. and in Wired magazine in the UK.

A journalism professor at New York University, Penenberg is the assistant director of the Business & Economic Program, heads the department's ethics committee—he wrote the department's journalism handbook for students, which received unanimous faculty approval and the ethics pledge, which all students must sign—and teaches multimedia, magazine writing, and hard news and investigative reporting to graduate and undergraduate students. In addition to the Today Show, he has appeared on CNN's "American Morning" and "Money Line," ABC World News and News Now, FoxNews, MSNBC, CNBC, and NPR and been quoted about media and technology in the Washington Post, Christian Science Monitor, Wired News, Ad Age, Marketwatch, Politico, etc.