With the election and inauguration of a new president coming up, Mr. Gistaro said, intelligence officials expect a surge in threat reporting about possible domestic attacks.
Nowhere in the document does the agency assess the veracity of those sources, though it does note that at one point the agency had "not been able to corroborate some of the more sensational threat reporting".
Another American official cautioned that terrorist threat reporting received by the C.I.A. and other agencies had not significantly declined, but acknowledged that it had not increased since the start of the war as many in the intelligence community had expected.
He paused for a moment, and then his view of Woodward burst forth: "I mean, the one thing I object to, you know, the one thing I really object to, is 'You didn't tell the President.' There's nothing about the threat reporting in that period that I didn't tell the President correctly about.
A vital tool in understanding these changes has been historical threat reporting.
Since then Twitter has taken a series of steps aimed at improving how it deals with harassment and abuse — including moves to automatically identify and limit the spread of abusive tweets, and simplify the threat reporting process for users.
