Part of the speaker series on misinformation, co-sponsored by the NULab at Northeastern University. Since 2014 there have been at least 74 nation-state led online influence campaigns targeting other countries through deceptive social media, with 21 of those in 2019 alone. How are such foreign influence efforts organized, what sets their content apart from legitimate social media activity, and what have we learned about their potential impact? Much as statistical forensics help illuminate the political economy of corruption, application of machine-learning to…