Mashable's Patrick Kulp covers how advertisers are finding themselves needing to react quickly to avoid showing up on Breitbart and fake news sites, and details the new DoubleVerify solution to protect advertisers from inflammatory content.

"Wayne Gattinella, CEO of DoubleVerify, claims extremist sites like those listed hadn't posed a problem for the company until now because there weren't nearly as many of them. While Breitbart and other inflammatory blogs have been around for years, they multiplied at a much faster clip and gained newfound influence in the months leading up to the election, he says.

"It's a relatively new phenomenon. Earlier this year, half of these sites didn't even exist," Gattinella said. "We're really talking about a category that's come about in the heart of recent political discussions.""

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