DHS Has Secured the Nation's Election Systems, but Work Remains to Protect the Infrastructure [open pdf - 1MB]
From the Document: "The election process is a cornerstone of American democracy. Prompted by suspicious cyber activities on election systems in 2016, the DHS Secretary designated the election infrastructure as a subsector to one of the Nation's 16 existing critical sectors. We conducted this audit to determine the effectiveness of DHS' coordination efforts to secure the election infrastructure since our last report in 2019."
Department of Homeland Security, Office of Inspector General, Report No. OIG-21-01
Department of Homeland Security Office of Inspector General: https://www.oig.dhs.gov/