10 C.F.R. § 727.3
To whom does this part apply?
(a) This part applies to DOE employees, DOE contractors, DOE contractor and subcontractor employees, and any other individual who has been granted access to a DOE computer or to information on a DOE computer.
(b) Section 727.4 of this part also applies to any person who uses a DOE computer by sending an e-mail message to such computer.