P.3d 641 (Kan. 2003) (lawyer violated Rule 1.6 by disclosing, in court documents, existence of defamation suit against former client); State ex rel. Okla. Bar Ass'n v. McGee, 48 P.3d 787, 791 (Okla. 2002) (a lawyer's duty of confidentiality attaches "to all information relating to the representation, whatever i