Mass. Gen. Laws ch. 167D, § 14: Agreements to exculpate bank from payment of deposit account to person unlawfully presenting evidence of account

Section 14. Any agreement between a depositor and any bank which exculpates such bank when a deposit account, or any part thereof, is paid by such bank to a person unlawfully presenting a passbook, or other instrument as evidence of such account is hereby declared to be contrary to public policy and void.