I am unfortunately representing myself in a matter because I cannot afford a lawyer right now. The opposing parties counsel sent me an email threatening to take legal action if I exercise my valid rights. He also copied a third party on this email, and that third party was my sister and NOT a party to the legal issues at hand. In my research of the professional conduct rules I see that it is a violation to threaten opposing counsel (with me Pro-se). I am also wondering if that counsel copying a non-party loses he and his client;s attorney-client privilege?