Internet, Terror Alert | featured news

A hacker broke into the Twitter account of NBC News and sent out a handful of false tweets about a suspected hijacking and a plane attack at ground zero just days before the tenth anniversary of 9/11.

The U.S. government's new system to replace the five color-coded terror alerts will have two levels of warnings - elevated and imminent - that will be relayed to the public only under certain circumstances for limited periods of time, sometimes using Facebook and Twitter, according to a draft Homeland Security Department plan obtained by The Associated Press....