Section 720 ILCS 5/14-4 - Sentence(a) Eavesdropping, for a first offense, is a Class 4 felony and, for a second or subsequent offense, is a Class 3 felony.(b) The eavesdropping of an oral conversation or an electronic communication of any law enforcement officer, State's Attorney, Assistant State's Attorney, the Attorney General, Assistant Attorney General, or a judge, while in the performance of his or her official duties, if not authorized by this Article or proper court order, is a Class 3 felony, and for a second or subsequent offense, is a Class 2 felony .Amended by P.A. 098-1142,§ 5, eff. 12/30/2014. P.A. 91-357, eff. 7-29-99; 91-657, eff. 1-1-00.