https://www.washingtonpost.com/graphics/2017/world/national-security/obama-putin-election-hacking/
The material was so sensitive that CIA Director John O. Brennan kept it out of the President’s Daily Brief, concerned that even that restricted report’s distribution was too broad. The CIA package came with instructions that it be returned immediately after it was read. To guard against leaks, subsequent meetings in the Situation Room followed the same protocols as planning sessions for the Osama bin Laden raid.