As Russia’s online election machinations came to light last year, a group of Democratic tech experts decided to try out similarly deceptive tactics in the fiercely contested Alabama Senate race, according to people familiar with the effort and a report on its results... One participant in the Alabama project, Jonathon Morgan, is the chief executive of New Knowledge, a small cyber security firm that wrote a scathing account of Russia’s social media operations in the 2016 election that was released this week by the Senate Intelligence Committee. An internal report on the Alabama effort, obtained by The New York Times,...