Twenty-three states plus the District of Columbia allow military and overseas voters (not domestic voters) to return voted ballots by email, facsimile and/or other Internet transmission; six allow internet return in military in zones of “hostile fire.” Alaska allows it for all absentee voters. But these methods of casting ballots over the Internet are very insecure; ballots returned this way are at risk for manipulation, loss or deletion.
According to the National Institute for Standards and Technology, the agency charged with reviewing the security of internet voting systems, even the most sophisticated cyber security protections cannot secure voted ballots sent over the Internet and that secure Internet voting is not feasible at this time. Even if ballots are returned electronically over online balloting systems that employ security tools such as encryption or virtual private networks, the privacy, integrity or the reliable delivery of the ballot can’t be guaranteed.
Just as important, ballots sent by electronic transmission cannot be kept private. Most States which accept electronically transmitted ballots require voters to sign a waiver forfeiting the right to a secret ballot. In some cases this waiver conflicts with State law or constitution which guarantees the right to a secret ballot.