(720 ILCS 135/1‑2)
    Sec. 1‑2. Harassment through electronic communications.
    (a) Harassment through electronic communications is the use of electronic communication for any of the following purposes:
        (1) Making any comment, request, suggestion or
    
proposal which is obscene with an intent to offend;
        (2) Interrupting, with the intent to harass, the
    
telephone service or the electronic communication service of any person;
        (3) Transmitting to any person, with the intent to
    
harass and regardless of whether the communication is read in its entirety or at all, any file, document, or other communication which prevents that person from using his or her telephone service or electronic communications device;
        (3.1) Transmitting an electronic communication or
    
knowingly inducing a person to transmit an electronic communication for the purpose of harassing another person who is under 13 years of age, regardless of whether the person under 13 years of age consents to the harassment, if the defendant is at least 16 years of age at the time of the commission of the offense;
        (4) Threatening injury to the person or to the
    
property of the person to whom an electronic communication is directed or to any of his or her family or household members; or
        (5) Knowingly permitting any electronic
    
communications device to be used for any of the purposes mentioned in this subsection (a).
    (b) As used in this Act:
        (1) "Electronic communication" means any transfer of
    
signs, signals, writings, images, sounds, data or intelligence of any nature transmitted in whole or in part by a wire, radio, electromagnetic, photoelectric or photo‑optical system.
        (2) "Family or household member" includes spouses,
    
former spouses, parents, children, stepchildren and other persons related by blood or by present or prior marriage, persons who share or formerly shared a common dwelling, persons who have or allegedly share a blood relationship through a child, persons who have or have had a dating or engagement relationship, and persons with disabilities and their personal assistants. For purposes of this Act, neither a casual acquaintanceship nor ordinary fraternization between 2 individuals in business or social contexts shall be deemed to constitute a dating relationship.
(Source: P.A. 90‑578, eff. 6‑1‑98; 91‑878, eff. 1‑1‑01.)