I've embedded the entire video of Trump's presser yesterday, although for this piece I'm focusing mainly on his beatdown of CNN and BuzzFeed, which starts at 1:07:45. Once you get to it, stick with it for awhile, because Trump takes a few questions on other subjects but comes back to the matter several times.
He's got harsh words not only for the media but also for the intelligence community, which he smacks down for constantly running to the press every time they talk to him. To demonstrate this, Trump explains that before his last intelligence briefing, he didn't tell anyone on his staff that it was happening - not even his longtime personal assistant, who always knows about his appointments - and went and took the meeting under those circumstances. Sure enough, as soon as the meeting was over, the press knew about it.