https://uncoverdc.com/2021/08/03/vulnerabilities-of-the-ess-ds200-vote-tabulator
Vulnerabilities of the ES&S DS200 Vote Tabulator
More electronic voting machines in the United States are managed by Election Systems & Software (ES&S) than any other vendor. An in-depth review of the specifications and functions of one of the company’s most used voting machines—the DS200 Vote Tabulator—reveals a machine with a difficult-to-detect modem buried in its motherboard, allowing the device mostly undetected access
