Regarding Russian Voting system hacking
Our systems are so vulnerable that one disgruntled, corrupt or otherwise bought off staffer can compromise an election in any key county. Consider:
"Election supervisors in Hillsborough, Pasco, Citrus and Clay counties separately told the Times/Herald their offices got the emails, which contained attachments that could have taken over their computers. But all four said their staffers did not open them. Volusia County said it opened one of the infected emails, but not the attachment that could have compromised its systems."
http://www.tampabay.com/news/politics/stateroundup/at-least-2-florida-counties-targeted-by-russian-hacking-attempt/2326339
The implicit assumption is that all staffers at all election offices are attempting to avoid opening infected emails that can compromise their systems. What if any choose to do so intentionally? What if one or more know in advance when such an email will arrive with the intent to immediately open it? The email can then be deleted. If caught they can easily plead innocence: a simple careless thoughtless moment when they got caught off guard.
No one needs an FBI clearance to be a staffer at one of those offices. And if one of our political parties wants to collude with a foreign power to swing an election, this would be a good way to do it.