18 C.F.R. § 3b.202
(b) The Commission will inform each individual whom it asks to supply information about himself, on the form which it uses to collect the information, or on a separate sheet that can be easily retained by the individual, in language which is explicit, informative, and easily understood, and not so lengthy as to deter an individual from reading it, of:
(d) The use of third-party sources to collect information about an individual may be appropriate in certain circumstances. In determining when the use of third-party sources would be appropriate, the following considerations will govern:
(5) When there are provisions for verifying any third-party information with the individual concerned before making a determination based on that information.
Third party sources, where feasible, will be informed of the purposes for which information which they are asked to provide will be used. In appropriate circumstances, pursuant to 5 U.S.C. 552a(k) (2), (5), and (7), the Commission may assure a third party that his identity will not be revealed to the subject of the collected information.