70 ILCS 1215/21
No person or officer shall willfully or corruptly, by himself, or in cooperation with any one or more persons, defeat, deceive or obstruct any person in respect to his or her right of examination and employment hereunder; or corruptly or falsely mark, grade, estimate or report upon the examination or proper standing of any persons examined hereunder, or aid in so doing; or willfully or corruptly threaten to dismiss, transfer or bring charges against any employee in the classified civil service, or willfully or corruptly make any false representation concerning the examination or concerning the person examined; or willfully or corruptly furnish to any person any special or secret information for the purpose of either improving or injuring the prospects or chances of any person so examined or to be examined, being appointed, employed or promoted. And no applicant for any examination shall willfully or corruptly, by himself, or in cooperation with any one or more persons, deceive the said Board with reference to his or her identity, or willfully or corruptly make any false representations in his or her application for any examination or commit any fraud for the purpose of improving the prospects or chances of such applicant in such examination.
70 ILCS 1215/21