"We have expanded the number of people notified about interactions with Twitter accounts potentially connected to a propaganda effort by a Russian government-linked organization known as the Internet Research Agency," Twitter said on Wednesday. "Approximately 1.4 million people have now received a notification from Twitter."
Twitter sent letters to users who interacted with IRA accounts by liking their content, replying to posts or retweeting them.
Twitter’s general counsel told the US Senate Intelligence Committee last year the number of Russia-linked accounts with election-related content was one one hundredth of a percent (0.0001) of all accounts.
Russia has repeatedly refuted the allegations of its interference in other states' internal affairs.
Russian Foreign Minister Sergey Lavrov stressed, when speaking about the purported meddling in elections in the United States, the United Kingdom or other countries, that there was no evidence to substantiate the claims.