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Voatz Internet Voting App Is Insecure.
By Bruce Schneier
"We find that Voatz has vulnerabilities that allow different kinds of adversaries to alter, stop, or expose a user's vote,including a sidechannel attack in which a completely passive network adversary can potentially recover a user's secret ballot."
https://www.schneier.com/blog/archives/2020/02/voatz_internet_.html
(Paper)
https://internetpolicy.mit.edu/wp-content/uploads/2020/02/SecurityAnalysisOfVoatz_Public.pdf
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News article:
https://www.nytimes.com/2020/02/13/us/politics/voting-smartphone-app.html
(The company's response is a perfect illustration of why non-computer non-security companies have no idea what they're doing, and should not be trusted with any form of security.)
https://blog.voatz.com/?p=1209