Except as otherwise provided in Section 9-340(c), and unless the bank otherwise agrees in a signed 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. (1) the creation, attachment, or perfection of a security interest in the deposit account;
2. (2) the bank’s knowledge of the security interest; or
3. (3) the bank’s receipt of instructions from the secured party.

72 Del. Laws, c. 401, § 1; 84 Del. Laws, c. 174, § 71