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In the Special Counsel investigation over Russian collusion, one of the major features is over Russian troll farms. While these farms are often discussed, many don’t know exactly what they are. USA Today recently wrote an article explaining this term, and used help from iSchool professor Jeff Hemsley.

“It allows them to interact with a server in the United States and that server is doing all the social media activity, so it looks like all the accounts are in the U.S. when, in fact… they are being operated sort of through an encrypted tunnel back through to Russia,” he says.