Rule 4.4 - Respect for Rights of Third Persons(a) In representing a client, a lawyer shall not use means that have no substantial purpose other than to embarrass, delay, or burden a third person, or use methods of obtaining evidence that violate the legal rights of such a person.(b) A lawyer who receives a writing or electronically stored information that, on its face, appears to be subject to the attorney-client privilege or otherwise confidential, under circumstances where it is clear that the writing or electronically stored information was not intended for the receiving lawyer, shall refrain from examining or reading the writing or electronically stored information, promptly notify the sending lawyer, and return the writing or delete the electronically stored information.Amended Effective 11/27/2018.