Offenses against intellectual property.
 (a) Whoever willfully, knowingly, and without authorization or  without reasonable grounds to believe that he or she has such  authorization, attempts or achieves access, communication, examination,  or modification of data, computer programs, or supporting documentation  residing or existing internal or external to a computer, computer  system, or computer network commits an offense against intellectual  property.
  (b) Whoever willfully, knowingly, and without authorization or  without reasonable grounds to believe that he or she has such  authorization, destroys data, computer programs, or supporting  documentation residing or existing internal or external to a computer,  computer system, or computer network commits an offense against  intellectual property.
  (c) Whoever willfully, knowingly, and without authorization or  without reasonable grounds to believe that he or she has such  authorization, discloses, uses, or takes data, computer programs, or  supporting documentation residing or existing internal or external to a  computer, computer system, or computer network commits an offense  against intellectual property.
  (d)(1) Except as otherwise provided in this subsection, an offense  against intellectual property is a Class A misdemeanor, punishable as  provided by law.
  (2) If the offense is committed for the purpose of devising or  executing any scheme or artifice to defraud or to obtain any property,  then the offender is guilty of a Class C felony, punishable as provided  by law.
  (3) If the damage to such intellectual property is greater than two  thousand five hundred dollars ($2,500), or if there is an interruption  or impairment of governmental operation or public communication,  transportation, or supply of water, gas, or other public or utility  service, then the offender is guilty of a Class B felony, punishable as  provided by law.
  (4) Whoever willfully, knowingly, and without authorization alters or  removes data causing physical injury to any person who is not involved  in said act shall be guilty of a Class A felony, punishable as provided  by law.
 (Acts 1985, No. 85-383, p. 326, §3,; Act 2003-355, p. 962, §1.)
This is some Alabama legalize regarding computer crime. There are no doubt tried cases setting praxis for interpretation of this of which I have no knowledge, but just reading the text you could definitly argue that if you have a computerprogram automate a decaptcha (a system to control the user is a human being), you do not have reasonable grounds to belive you are authorized. But ye, you should talk to a lawyer if you are worried.