NEW YORK, NY - APRIL 23:  A stock trader works the floor of the New York Stock Exchange on April 23, 2013 in New York City. The market dropped sharply
NEW YORK, NY - APRIL 23: A stock trader works the floor of the New York Stock Exchange on April 23, 2013 in New York City. The market dropped sharply after the Associated Press's Twitter account was hacked today and a false tweet announced that President Barack Obama had been injured in an attack at the White House. The AP took down its Twitter account and announced it had been hacked. The stock market recovered, with the Dow closing up 152 points at 14,719. (Photo by John Moore/Getty Images) ( John Moore )