The hacking controversy is talked about so much because the Democrats lost "so big" in the election, says the President-elect.
By Adam Arnold, News Reporter
Donald Trump says the only reason the hacking of Democrat emails is discussed is because the party lost "so big" in the election and is "totally embarrassed".
The President-elect made the Twitter comments a day after being briefed on a report by intelligence chiefs who claim Vladimir Putin personally ordered a campaign to influence the result.
US spy bosses believe Russia interfered with the White House race by trying to undermine and discredit Hillary Clinton to boost Mr Trump's chances of winning.
The Republican unexpectedly defeated his Democratic opponent in November's contest but he has been sceptical of the hacking accusations against Moscow and called the controversy a "political witch-hunt".
He later said he had "learned a lot" from the briefing with intelligence officials but declined to say whether he accepted their assertions about alleged Russian intrusion.
US spy agencies believe Moscow hacked into the emails of the Democratic National Committee (DNC) and Mrs Clinton's campaign team and fed the material to WikiLeaks.
But the report claimed there were also targets associated with the Republican party.
Mr Trump said any hacking during the election campaign had no effect on the result and voting machines were not tampered with.
The property tycoon tweeted: "Intelligence stated very strongly there was absolutely no evidence that hacking affected the election results. Voting machines not touched!"
He added: "Only reason the hacking of the poorly defended DNC is discussed is that the loss by the Dems was so big that they are totally embarrassed!"
Mr Trump has said he will appoint a team to "aggressively combat and stop cyber attacks" by coming up with a plan within 90 days of him taking office on 20 January.
Mr Putin most likely wanted to discredit Mrs Clinton because he blames her for inciting protests against his regime in late 2011 and early 2012, and because he resents her for disparaging comments she has made about him, the report said.
The report said Russian intelligence accessed "elements" of multiple state and local electoral boards, but "the systems targeted or compromised were not involved in counting votes".
Russia has denied the US government's hacking claims.