PALM BEACH, Fla. President-elect Donald Trump , in the final hours of 2016, restated his doubt about the validity of U.S. intelligence analyses that the Russian government hacked various political organizations with the goal of putting him in the Oval Office.

I just want them to be sure, because its a pretty serious charge, and I want them to be sure, Trump said in a brief question-and-answer session as he prepared to enter a New Years Eve party at his Mar-a-Lago resort.

And if you look at the weapons of mass destruction, that was a disaster, and they were wrong. And so I want them to be sure, Trump said, referring to the faulty argument pushed by proponents of the 2003 Iraq invasion that dictator Saddam Hussein possessed banned weapons. I think its unfair if they dont know. And I know a lot about hacking. And hacking is a very hard thing to prove. So it could be somebody else. And I also know things that other people dont know, and so they cannot be sure of the situation.

Trump then stated his belief that extremely sensitive information should not be communicated via computers at all, citing the expertise of his pre-teen son.

Its very important, if you have something really important, write it out and have it delivered by courier, the old-fashioned way because Ill tell you what, no computer is safe. I dont care what they say, no computer is safe, Trump said. I have a boy whos 10 years old. He can do anything with a computer. You want something to really go without detection, write it out and have it sent by courier.