system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:Who builds, secures and audits the machines that we use to vote in the United States?

With all the recent talk about encryption, digital surveillance, major credit card breaches and the media storm after the 2000 presidential election "miscount," I'm wondering why more people aren't curious about the security of the machines we use to vote with.

Are they 100% trustworthy?
gpt
There was a big controversy, and I've heard a number of rumors about machines being really hard to enter the right candidate for, machines reporting thousands of blank ballots, and machines mapping both the Bush and Kerry buttons to Bush unless you pressed the exact center of the Kerry button, and people hacking the machines in about twenty seconds. 

They are built by various companies that make other things invovling touchscreens like ATMs. Diebold is a major one. 

Security and auditing, at least in the past, was basically fucking nothing.