Operational environment

1. All software, hardware (including facilities, furnishings and fixtures), materials, documentation, and the interface used by the election personnel, maintenance operator, poll worker, and voter, required for voting equipment operations.

Source: Glossary of terms database, U.S. Election Assistance Commission, https://www.eac.gov/glossary/

2. All software, hardware (including facilities, furnishings, and fixtures), materials, documentation, and the interface required for voting equipment operations used by the election personnel, maintenance operators, poll worker, and voters.

Source: Cyber Threats to Elections – A Lexicon, Cyber Threat Intelligence Integration Center & Office of the Director of National Intelligence, https://www.dni.gov/files/CTIIC/documents/CTIIC_2018_Lexicon_without_banner_small_file_for_Post.pdf