The “Russian Interference” Scandal, In a Nutshell
A few dozen GRU officers spent several thousand dollars to acquire fake U.S. identities and post fake news on U.S. social media, before and after the 2016 election. They hacked into some state and local electoral boards and for some reason (maybe just to see if they could do it) stole information on half a million voters in Illinois and Arizona. (Just like the NSA probably has information on lots of Russian voters.)