The Brennan Center for Justice at New York University convened a high-level task force of voting experts from government, academia and the private sector to systematically analyze vulnerabilities in electronic voting systems used across the US. A crack team of technical experts concentrates on three main types of electronic voting systems: Direct Recording Electronic; Direct Recording Electronic with Voter Verified Paper Trail; and Precinct Count Optical Scan. This book not only systematically identifies 120 potential threats to voting technology, it also offers specific remedies and countermeasures that election officials can employ to make these attacks more difficult to perform.