§ 6506. Advertising. No regulated mortgage investor, any of whose authorized real estate securities are insured by mortgage guaranty insurance pursuant to this article may state in any form of report or advertising that the real estate loans of the investor are "insured loans" unless the report or any form of advertising also clearly states that the loans are insured by private insurers and the names of such insurers are given. A regulated mortgage investor also shall not make any such statement unless such insurance is by a company authorized to transact mortgage guaranty insurance business in this state.