The 2016 elections taught us to watch for attacks that undermine the legitimacy of elections

Princeton computer scientist and former White House Deputy CTO Ed Felten (previously) writes about the security lessons of the 2016 election: first, that other nation-states are more aggressive than generally supposed, and second, that you don't need to hack the vote-totals to effect devastation on an adversary -- it's sufficient to undermine the election's legitimacy by messing with voter rolls, "so there is uncertainty about whether the correct people were allowed to vote." (more")