Missouri

V.A.M.S. 569.099
1. A person commits the offense of tampering with computer users if he or she knowingly and without authorization or without reasonable grounds to believe that he or she has such authorization:
(1) Accesses or causes to be accessed any computer, computer system, or computer network; or
(2) Denies or causes the denial of computer system services to an authorized user of such computer system services, which, in whole or in part, is owned by, under contract to, or operated for, or on behalf of, or in conjunction with another.