S.D. Codified Laws § 3-6C-33

A reporter who makes a good faith report of improper governmental conduct or crime, or submits records in support of the good faith report, is immune from any liability, civil or criminal, which might otherwise be incurred or imposed, and has the same immunity for participation in any judicial proceeding resulting from the good faith report. The immunity does not extend to a state employee who participated in the reported improper governmental conduct or crime.