Former Cybersecurity and Infrastructure Security Agency director Chris Krebs criticized Rudy Giuliani Sunday for making baseless claims about the 2020 presidential election at a Nov. 20 news conference.

Driving the news: When asked in an interview with CBS' "60 Minutes" what he thought of the news conference, Krebs responded: "It was upsetting because what I saw was [an] apparent attempt to undermine confidence in the election, to confuse people, to scare people."

“We can go on and on with all the farcical claims alleging interference in the 2020 election, but the proof is in the ballots. The recounts are consistent with the initial count,” says Krebs. “The American people should have 100% confidence in their vote.” https://t.co/SBqu3FlK6S pic.twitter.com/5ZMHcnLGYa

— 60 Minutes (@60Minutes) November 30, 2020

• "It's not me, it's not just CISA. It's the tens of thousands of election workers out there that had been working nonstop, 18-hour days, for months," added Krebs, who was fired by President Trump after the cybersecurity department called the 2020 election "the most secure in American history."

What they're saying: Trump tweeted criticism of "60 Minutes" as the interview aired, claiming that "60Minutes never asked us for a comment."

• The Trump campaign did not immediately respond to Axios' request for comment.

Go deeper: Krebs "most upset" he didn't get to say goodbye to team after Trump firing

Editor's note: This article has been updated with further context on Krebs' firing.