Sindri Thor Stefansson was a "naughty boy" growing up, but nobody predicted he'd become the island nation's most famous thief. A bitcoin mining computer haven because of its chilly temperatures and low crime, Iceland's thriving industry was an easy target for Stefansson and his gang. One mine they burgled had no security and a ladder near an open window.
Were they caught? Yes, and re-caught after Stefansson, who's serving four and a half years, escaped and became something of an Icelandic folk hero. But authorities never found the 550 computers he stole, which could still be mining bitcoin for the thieves or an accomplice.