“It’s almost hard to believe now, but the last time the United States elected a president, Facebook, Twitter, and YouTube had essentially no policies on misinformation, conspiracy theories, or foreign election interference.”

In his latest Pattern Matching newsletter, OneZero senior writer Will Oremus explains how social media platforms have evolved since the 2016 election. Many platforms have made significant progress — at least at the policy level — but experts interviewed for the story say there’s still work to be done.

“We continue to see a noisy digital media environment that could well mislead many voters,” said Dipayan Ghosh, who has experience both as a technology policy adviser in the Obama administration and working on security and privacy at Facebook, and is now director of the Platform Accountability Project at Harvard’s Kennedy School.

Read the full story below:

What Social Media Companies Have Fixed Since the 2016 Election