Maryland Code, Courts and Judicial Proceedings § 6-103

(1) Transacts any business or performs any character of work or service in the State;

(2) Contracts to supply goods, food, services, or manufactured products in the State;

(3) Causes tortious injury in the State by an act or omission in the State;

(4) Causes tortious injury in the State or outside of the State by an act or omission outside the State if he regularly does or solicits business, engages in any other persistent course of conduct in the State or derives substantial revenue from goods, food, services, or manufactured products used or consumed in the State;

(5) Has an interest in, uses, or possesses real property in the State; or

(6) Contracts to insure or act as surety for, or on, any person, property, risk, contract, obligation, or agreement located, executed, or to be performed within the State at the time the contract is made, unless the parties otherwise provide in writing.

(2) The provisions of this section apply to computer information and computer programs in the same manner as they apply to goods and services.