Suspected Chinese hackers used SolarWinds bug to spy on U.S. payroll agency

Suspected Chinese hackers used SolarWinds bug to spy on a U.S. payroll agency, marking a new twist in a sprawling cybersecurity breach that the U.S. lawmakers have labeled a national security emergency.  Two people briefed on the case said FBI investigators recently found that the National Finance Center, a federal payroll agency inside the U.S. Department of Agriculture, was among the affected organizations, raising fears that data on thousands of government employees may have been compromised. The software flaw exploited by the suspected Chinese group is separate from the one the United States has accused Russian government operatives of…