DefCon event shows how easy it is to hack voting systems
Officials need to rethink their use of digital voting systems.
Two states say the DHS is wrong about election hacking
California and Wisconsin say it wasn't their election systems that were targeted.
DHS finally reveals the states Russia hacked during the elections
According to the investigation, the attackers didn't tamper with voting machines.
Virginia to replace voting machines over hacking concerns
It's worried they'll be prime targets for interference.
Facebook pledges funding to non-profit election security group
The social network will give $500,000 to help start the bipartisan organization.
South Carolina hit with 150,000 Election Day hacking attempts
Attacks on the historically red state highlight the extent of US election targets.
Report: Russia hacked election systems in 39 US states
President Obama issued a "red phone" warning to the Kremlin.