>> People are prepared to->> The 2016 Presidential Campaign's facing a growing threat from foreign hackers. That Wednesday from top American spymaster James Clapper. Mark Hosenball is on the story.>> His agencies are looking into evidence that the US Presidential campaigns are already being attacked by hackers. In some cases, these hackers are as good as anybody in the US government at hacking and hiding themselves.
>> US intelligence officials says previous cyber attacks on campaigns in 2008 and 2012 have been linked to Chinese hackers. The threat magnified once the nominees began receiving classified briefings after their party conventions.>> Once the campaigns do get briefed by the intelligence agencies, that information is certainly out of the hands immediately of the intelligence community.
They're probably gonna be a little bit careful as to what they tell them. For reasons that we're just talking about, because of the hacking.>> Hackers could also seek information to plan a terror attack.>> Very, very detailed schedule information in the campaign's computers. These theoretically could give bad guys information as to how to behave badly as it were.
If there was some evidence, for example, that hackers were going in and trying to thwart Donald or Hillary's movements. That's something that certainly would concern the Secret Service people.>> Clapper offered no details on which campaigns have been hacked. But a source tells Reuters that the attempts are serious enough that key members of Congress have been briefed.