Security researchers have found key flaws in a mobile voting app that some states plan to use in the 2020 election that can allow hackers to launch both client- and server-side attacks that can easily manipulate or even delete someone’s vote, as well as prevent a reliable audit from taking place after the fact, they said. A team of researchers at MIT released a security audit of Voatz—a blockchain app that already was used in a limited way for absentee-ballot voting in the 2018 mid-term elections—that they said bolsters the case for why internet voting is a bad idea and voting transparency is the only way to ensure legitimacy. West Virginia was the first state to use Voatz, developed by a Boston-based company of the same name, in the mid-term election, marking the inaugural use of internet voting in a high-stakes federal election. The app primarily collected votes from absentee ballots of military service personnel stationed overseas. Other counties in Utah and Colorado also used the app last year in a limited way for municipal elections. However, despite the company’s claim that the app has a number of security features that make it safe for such an auspicious use—including immutability via its use of a permissioned blockchain, end-to-end voting encryption, voter anonymity, device compromise detection, and a voter-verified audit trail–the MIT team found that any attacker that controls the user’s device through some very rudimentary flaws can brush aside these protections….