Vladimir Levin
Russian computer technician who moved roughly ten million dollars out of Citibank's cash-management system from St Petersburg in 1994 — often billed as the first online bank robbery.
Through the summer and autumn of 1994, Levin logged into Citibank's corporate payments system and ordered transfers from customer accounts to accounts accomplices had opened in Finland, Israel, the Netherlands, Germany and the US. None of it went over the web, which barely existed; it went through the bank's dial-up service, and the accomplices were caught trying to withdraw the money.
Levin was arrested at Stansted in 1995, extradited to the US and pleaded guilty in 1997, receiving three years. The bank recovered nearly everything, but the point had been made: a robbery no longer needed anyone to walk through the door, and banks started spending real money on strong authentication instead of trusting that nobody knew the login.