http://www.wired.com/2014/09/satoshi/

The hacker, who told WIRED his name is “Jeffrey,” claims to have also obtained information on Nakamoto that could be used to unmask his identity. Jeffrey didn’t tell us much, but when we asked him how he managed to take control over the satoshin@gmx.com email address that Nakamoto had used for some of his correspondence, he wrote: “The fool used a primary gmx under his full name and had aliases set up underneath it. He’s also alive.”