Maryland Code, Commercial Law § 14-3402

(1) Publicly post or display an individual's Social Security number;

(2) Print an individual's Social Security number on a card required for the individual to access products or services provided by the person;

(3) Require an individual to transmit the individual's Social Security number over the Internet unless the connection is secure or the individual's Social Security number is encrypted;

(4) Initiate the transmission of an individual's Social Security number over the Internet unless the connection is secure or the Social Security number is encrypted;

(5) Require an individual to use the individual's Social Security number to access an Internet Web site, unless a password, unique personal identification number, or other authentication device is also required to access the Web site; or

(6) Unless required by State or federal law:

(1) The collection, release, or use of an individual's Social Security number as required by State or federal law;

(2) The inclusion of an individual's Social Security number in an application, form, or document sent by mail, electronically transmitted, or transmitted by facsimile:

(3) The use of an individual's Social Security number for internal verification or administrative purposes; or

(4) An interactive computer service provider's or a telecommunications provider's transmission or routing of, or intermediate temporary storage or caching of, an individual's Social Security number.