The outage affected broad swaths of the country on Friday.
Clapper is expected to give a decision to the White House at the end of the week.
US intelligence officials "continue to see evidence" of ISIS in Europe.
In September, China and the U.S. agreed to end coroprate hacking.
The Obama administration has long sought more help from coalition partners in the fight.
"The Army Field Manual is the standard," James Clapper says.
Homegrown terror appears to be “the most significant Sunni terrorist threat to the U.S."
Obama tapped Beth Cobert to lead the agency in the wake of its data breach.
Civil libertarians are laying the groundwork for a protracted battle on Capitol Hill.
Clapper appeared to refer to a program picking up every cellphone call in Afghanistan.
“I think our more proximate threat are the so-called lone wolves,” James Clapper said.
A group of Republican senators are asking the nation’s top intelligence official to study the...
The top U.S. intelligence officer stepped into the heated politics of the "bathroom wars."
Any plan "will not be completely satisfactory to all parties," the nation's top spy claimed.
"That is certainly a realistic goal," James Clapper said of the 28 pages.
"I made a mistake,” James Clapper said about his 2013 comments.
Director of National Intelligence James Clapper will give the warning to Congress.
Pyongyang could start recovering spent fuel in the coming weeks and months.
The reported teenager claims to have hacked James Clapper and his wife.
Despite some doubts about terrorism, an airline exec said “an external influence” is likely to...
Defense and intelligence officials took heat in a Senate hearing Tuesday.
James Clapper said that the U.S. should be able to make sure Iran doesn't cheat.
Raymond Cook will become the next chief information officer of the intelligence community.
The Saudis are taking Hezbollah's expansion of regional practice and operations seriously.