The US Senate Intelligence Committee has criticised Twitter for offering an "inadequate" appearance in briefings on Russian interference in the 2016 presidential election. Democratic Senator Mark Warner said the briefings were "deeply disappointing". The social network earlier said it had shut down about 200 accounts linked to a Russian misinformation campaign.
It follows a review by Facebook which found Russian-funded adverts helping to spread false misinformation online. Twitter said it found a match for 22 of roughly 450 accounts Facebook shared, and another 179 "linked accounts". Russia has repeatedly denied claims that it interfered in the US elections.
The Facebook case involved thousands of adverts, purchased in Russia, which directed users towards hundreds of different Facebook accounts. Those accounts did not support any particular candidate, but instead posted inflammatory information on hot topics such as immigration.
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