Hackers believed to be linked to Russia infiltrated the highest levels of the U.S. government, including the Department of Homeland Security, the State Department, and parts of the Pentagon, unnamed officials
told the New York Times and other news organizations.
The National Security Council is coordinating an investigation into the scale of what could be the largest-ever hack of U.S. government systems. The Department of Homeland Security ordered all federal agencies to
disconnect from SolarWinds software (FT), which was compromised by hackers as early as March. Hundreds of the biggest American companies and telecommunications firms, as well as universities worldwide, also use the software, though it remains unclear what was targeted. People familiar with the investigation
told the Washington Post that Russian hackers belonging to the country’s foreign intelligence service are responsible. Moscow has denied involvement.