Millions of Americans exposed to Russian content on Instagram, Facebook says

Reuters: WASHINGTON (Reuters) - About 20 million Americans may have seen Russian-backed content on Instagram in the run-up to the 2016 U.S. presidential election, Facebook Inc disclosed on Wednesday as lawmakers questioned tech companies about Russia’s use of social media to try to influence the vote.

Senate Intelligence Committee members questioned lawyers for Facebook, Twitter Inc and Alphabet Inc’s Google for a second day as part of a broader investigation into alleged Russian interference in the election campaign.

Facebook, the world’s largest social media network, again came under the most scrutiny from lawmakers, who expressed frustration with the company because of its role in targeted marketing on the internet.

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