ProPublica is a nonprofit newsroom that investigates abuses of power. Sign up to receive our biggest stories as soon as they’re published. After Russian intelligence launched one of the most devastating cyber espionage attacks in history against U.S. government agencies, the Biden administration set up a new board and tasked it to figure out what happened — and tell the public. State hackers had infiltrated SolarWinds, an American software company that serves the U.S. government and thousands of...