Solarwinds was hacked since March and is used by Dominion votings systems, even though Dominion denies this. Dominion displayed the Solarwinds logo on their voting system website until recently.
“Intelligence agencies” are blaming the hack on Russians, of course. That remains to be seen and is probably Deep State disinformation.
Even though other security researchers say it wasn’t the main source of the hack, security researcher Vinoth Kumar told Reuters that, last year, he alerted the company that anyone could access SolarWinds’ update server by using the password “solarwinds123”