Maryland Commercial Law Section 9-341

      Except as otherwise provided in § 9-340(c), and unless the bank otherwise agrees in an authenticated record, a bank's rights and duties with respect to a deposit account maintained with the bank are not terminated, suspended, or modified by:

            (1)      The creation, attachment, or perfection of a security interest in the deposit account;

            (2)      The bank's knowledge of the security interest; or

            (3)      The bank's receipt of instructions from the secured party.