Microsoft President Brad Smith (Photo: Microsoft) More than 1,000 developers likely worked on rewriting code for the massive SolarWinds supply chain attack that affected many companies and U.S. government agencies, Microsoft President Brad Smith said in a Sunday interview, pointing out the attack is most likely continuing. In an interview with CBS News' "60 Minutes," Smith said the supply chain attack was "the largest and most sophisticated attack the world has ever seen." The U.S. federal agencies investigating the attack, which targeted Microsoft and other technology and cybersecurity companies, say it was likely a cyberespionage campaign waged by Russian hackers (see: