By Conor White

While Americans nationwide wait for midterm voting results on Tuesday, the F.B.I. and the department of Homeland Security will be watching for something less easily tallied ー signs of potential hacking or meddling.

Rob Marvin, associate features editor at PCMag, told Cheddar that the level of election interference in 2016 from "outside malicious actors" was at a scale never seen before.

Marvin is skeptical that authorities in the U.S., and around the world, can successfully thwart more interference.

"Facebook ($FB) and the social media platforms have admitted they're kind of in an arms race with troll armies and nation states to find and delete fake accounts that are influencing elections," Marvin pointed out.

"And they can't do it fast enough," he added.

Marvin cautioned voters to be wary of any last-minute revelations about a candidate that surface on social media.

"You should be voting your mindset," he said.

While many see the 2018 midterm elections as a referendum on President Trump's first two years in office, it is also a litmus test on the country's ability to thwart hackers.

"We're going to see what we've learned," Marvin said.

For full interview click here.