This may sound ridiculous, but if YOU were the CIA, and your biggest problem is random terrorist attacks, you might want somebody else to “leak” all your surveillance methods to inhibit or scare the terrorists. You ALSO might want someone else to expose negative info on a presidential candidate, you don’t like or want.
Remember, very often, because of the Media, many things are NOT the way it looks or sounds. Free information from the media, is worth exactly that, free. In fact its often costly if or when you believe it.