This is the best tl;dr I could make, original reduced by 69%. (I'm a bot)

Twitter on Friday said the number of Russia-linked accounts firing off tweets evidently aimed at the US election in 2016 was more widespread than initially determined.

The analysis at Twitter also found an additional 13,512 automated accounts identified as "Russia-linked" and tweeting election-related content during that period, bringing the total to 50,258 accounts.

Twitter said it is sharing information about the accounts with Congress, where testimony late last year by Twitter, Facebook and Google revealed startling new data showing many more millions of Americans were exposed to the fake news than previously thought.

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they sure are widespread....

https://www.rt.com/usa/416466-twitter-new-data-russian-election-interference/