At 3.00am on the morning after the Boston Marathon bombings in April 2013, Anonymous’ Twitter account @YourAnonNews tweeted the names of two bombing suspects, 20 minutes after a similar tweet from unknown Twitter user Greg Hughes. The first name, Mike Mulugeta, had been announced on a police scanner. But the second, Sunil Tripathi, was a missing Brown student whom Twitter and Reddit users had misidentified after comparing FBI-released images