—State of the Union (@CNNSotu) December 20, 2020
However, when pressed by host Jake Tapper about whether the US should retaliate against Russia, Krebs cautioned he would "be very careful about escalating this."
"I think there needs to be a conversation globally, internationally across like-minded countries about what is acceptable," he added.
Krebs was fired from his role as the head of CISA last month not long after he publicly pushed back against Trump's baseless claims of voter fraud in the election, Business Insider's Sonam Sheth reported.
- Read more:
- 'It's not how I wanted to go out': Chris Krebs, the election security official fired by Trump, opens up in new interview and dismisses 'farcical' claims of voter fraud
- Why the impact of the unprecedented SolarWinds hack that hit federal agencies is 'gargantuan' and could hurt thousands of companies, according to cybersecurity experts
- How hackers breached IT company SolarWinds and staged an unprecedented attack that left US government agencies vulnerable for 9 months
- Trump contradicts Pompeo as he breaks his silence on SolarWinds cyberattack and shifts focus to China instead of Russia
