Section 156.50. Offenses involving computers; defenses

In any prosecution:
    1.  under  section  156.05  or  156.10  of this article, it shall be a
  defense that the defendant had reasonable grounds to believe that he had
  authorization to use the computer;
    2. under section 156.20, 156.25, 156.26 or 156.27 of this  article  it
  shall  be a defense that the defendant had reasonable grounds to believe
  that he had the right to alter in any manner  or  destroy  the  computer
  data or the computer program;
    3.  under  section  156.29  or  156.30  of  this article it shall be a
  defense that the defendant had reasonable grounds to believe that he had
  the right to copy, reproduce or duplicate in  any  manner  the  computer
  data or the computer program.