DefCon event shows how easy it is to hack voting systems
Officials need to rethink their use of digital voting systems.
Twitch wants to make sure you register to vote
Red + blue = purple
Virginia to replace voting machines over hacking concerns
It's worried they'll be prime targets for interference.
States still don't know if Russians hacked their voting systems
The federal government hasn't warned election officials yet.
Facebook pledges funding to non-profit election security group
The social network will give $500,000 to help start the bipartisan organization.
Clinton, Romney campaign managers unite to fight election hacking
Facebook and Google are also onboard.
Russian intelligence agents targeted US voting-software company
And then they sent phishing emails to more than 100 local election officials.