Hopefully not Barr. There are a lot of people,most likely numbering in the thousands, who work at the DOJ.
All this Communication (Hunter was emailing his VP father about someone owing him $1 Million dollars for a China deal, and VP Joe responded that he would get involved, if Hunter wishes), All this Comms are monitored.
This is no secret to DC, Lindsey G. (who hangs out with Generals), or to the DoJ, FBi.
This has been known for years, because these people talk, their spouses are in strategic places and its multiplied. State Dept Chatter is Loud.