Security Analysis of the Estonian Internet Voting System [2014, pdf](jhalderm.com)

Security Analysis of the Estonian Internet Voting System [2014, pdf]

https://jhalderm.com/pub/papers/ivoting-ccs14.pdf

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"ABSTRACT Estonia was the first country in the world to use Internet voting nationally, and today more than 30% of its ballots are cast online. In this paper, we analyze the security of the Estonian I-voting system based on a combination of in-person election observation, code review, and adversarial testing. Adopting a threat model that considers the advanced threats faced by a national election system—including dishonest insiders and state-sponsored attacks—we find that the I-voting system has serious architectural limitations and procedural gaps that potentially jeopardize the integrity of elections. In experimental attacks on a reproduction of the system, we demonstrate how such attackers could target the election servers or voters’ clients to alter election results or undermine the legitimacy of the system. Our findings illustrate the practical obstacles to Internet voting in the modern world, and they carry lessons for Estonia, for other countries considering adopting such systems, and for the security research community."

Cf. E-Voting Refuses to Die Even Though It's Neither Secure nor Secret: More than two dozen states offer some form of internet voting, but it often means waiving the right to a secret ballot https://www.scientificamerican.com/article/e-voting-refuses-...