Russians are again targeting Americans with disinformation, Facebook and Twitter warn.
The companies said the F.B.I. had warned them that a so-called troll farm in St. Petersburg set up a network of fake user accounts and a website.
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Russians are again targeting Americans with disinformation, Facebook and Twitter warn.
The companies said the F.B.I. had warned them that a so-called troll farm in St. Petersburg set up a network of fake user accounts and a website.