This cyber attack has affected hundreds, if not thousands, of high profile "targets" in the Fortune 500 and US Government. We found the following articles interesting as well as informative:
BBC News: SolarWinds: Why the Sunburst hack is so serious
CBC News: U.S. agencies among targets of months-long global cyberspying campaign
KerbsOnSecurity: U.S. Treasury, Commerce Depts. Hacked Through SolarWinds Compromise