Twitter Hacked? A Big News but Fake

I was shocked about 20 minutes ago because I was just watching the US stock market, something happened suddenly because I saw the DOW seems crashed suddenly. but later it was pulled up soon. I could do nothing but just opening my mouse as an “O” !

Later the news came out:

I copied the content, but you can click the following link to visit original website:

AP says its Twitter account hacked

WASHINGTON (MarketWatch) -- The Associated Press says its Twitter account has been hacked, as the Twitter feed falsely said that there had been two explosions at the White House. The tweet from the AP account briefly caused U.S. stocks SPX +0.91% to drop. White House spokesman Jay Carney is holding his daily press conference as usual.