New report on Russian disinformation, prepared for the Senate, shows the operation’s scale and sweep

A report prepared for the Senate that provides the most sweeping analysis yet of Russia’s disinformation campaign around the 2016 election found the operation used every major social media platform to deliver words, images and videos tailored to voters’ interests to help elect President Donald Trump — and worked even harder to support him while in office. The report is the first to study the millions of posts provided by major technology firms to the Senate Intelligence Committee, led by Sen. Richard Burr (R-NC), its chairman, and Sen. Mark Warner (VA), its ranking Democrat. The bipartisan panel hasn’t said whether it endorses the findings. It plans to release it publicly along with another study soon. The research — by Oxford University’s Computational Propaganda Project and Graphika, a network analysis firm — offers new details of how Russians working at the Internet Research Agency, which U.S. officials have charged with criminal offenses for interfering in the 2016 campaign, sliced Americans into key interest groups for targeted messaging. These efforts shifted over time, peaking at key political moments, such as presidential debates or party conventions, the report found.