"Their people examined many of the documents that were recovered off the hard drive and published in The New York Post piece, and they believe that based on those examinations they’ve identified the FBI agent who issued the subpoena for Hunter’s laptop.

His name is reportedly Joshua Wilson and he works out of the FBI’s satellite office in downtown Willmington. Mr. Wilson is an FBI agent best known for his work in the “child pornography” division of the bureau."
https://www.revolver.news/2020/10/hunter-biden-laptop-emails-anthony-weiner/