It shall be unlawful for any air carrier or broker or any officer, receiver, trustee, lessee, agent, or employee of such carrier, broker, or person, or for any other person authorized by such carrier, broker, or person to receive information, knowingly to disclose to, or permit to be acquired by any person other than the shipper or consignee, without the consent of such shipper or consignee, any information concerning the nature, kind, quantity, destination, consignee, or routing of any property tendered or delivered to such air carrier or broker for such transportation, which information may be used to the detriment or prejudice of such shipper or consignee, or which may improperly disclose his business transactions to a competitor; and it shall also be unlawful for any person to solicit or receive knowingly any such information which may be so used.

Nothing in this chapter shall be construed to prevent the giving of such information in response to any legal process issued under the authority of any court, or to any officer or agent of the government of the United States or of any state, territory, or district thereof, in the exercise of his power, or to any officer or other duly authorized person seeking such information for the prosecution of persons charged with or suspected of crimes or to another carrier or broker, or its duly authorized agent, for the purpose of adjusting mutual traffic accounts in the ordinary course of business of such carriers or brokers.