This subsection shall not prevent a financial institution from providing nonpublic personal information to a nonaffiliated third party to perform services for or functions on behalf of the financial institution, including marketing of the financial institution’s own products or services, or financial products or services offered pursuant to joint agreements between two or more financial institutions that comply with the requirements imposed by the regulations prescribed under section
6804 of this title, if the financial institution fully discloses the providing of such information and enters into a contractual agreement with the third party that requires the third party to maintain the confidentiality of such information.