As used in this subchapter:
(1) “Action” includes nonaction or the failure to take action;
(2) “Authorized agencies” means any law enforcement agency or agency or instrumentality of this state, of a county or municipality, or of the federal government which is charged with the responsibility of investigating fires;
(3) “Immune” means that neither a civil action nor a criminal prosecution may arise from any action taken pursuant to this subchapter when actual malice on the part of the insurer or its representative against the insured is not present;
(4) “Insurer” shall include every person engaged as indemnitor, surety, or contractor in the business of entering into contracts of insurance;
(5) “Named insured” means the person whose name appears on the face of the policy as the insured individual; and
(6) “Relevant information” means information having any tendency to make the existence of any fact that is of consequence to the investigation or determination of the issue more probable or less probable than it would be without the information.