The name and address of the informant must be kept confidential. No files or information will be revealed which might aid in the unauthorized identification of an informant. Pursuant to 5 U.S.C. 552(b)(7)(D), specific informant records that are exempt from disclosure are those that could reasonably be expected to disclose the identity of a confidential source, including a state, local, or foreign authority or any private institution which furnished information on a confidential basis, and, in the case of a record or information compiled by a criminal law enforcement authority in the course of a criminal investigation, or by an agency conducting a lawful national security intelligence investigation, information furnished by a confidential source. Informant records maintained by CBP under an informant's name or personal identifier that are requested by a third party according to the informant's name or personal identifier are not subject to the disclosure requirements of 5 U.S.C. 552(a), unless the informant's status as an informant has been officially confirmed.

[CBP Dec. 15-16, 80 FR 71693, Nov. 17, 2015]