Report on Russian hacking relied on human sources, technical collection - U.S. spy chief

Director of National Intelligence James Clapper testifies before a Senate Armed Services Committee hearing on foreign cyber threats, on Capitol Hill in Washington. REUTERS/Kevin Lamarque

WASHINGTON (Reuters) - Director of National Intelligence James Clapper said on Tuesday the U.S. intelligence community's report concluding that Russia orchestrated hacks during the 2016 presidential campaign was based on a mix of human sources, collection of technical data and open-source information.

Clapper, speaking before the Senate Intelligence Committee, said much of the report is classified due to a need to protect sensitive sources and methods.