Attorney-Client Privilege Defined​​ A. New York State New York codified the attorney-client privilege in CPLR 4503, which provides: New York law holds that privileged persons include the client or prospective client, the attorney, and agents of the client and attorney.Maintaining attorney-client privilege when working with third-party consultants can be tricky. The attorneyclient privilege shields from disclosure any confidential communications between an attorney and his or her client. The principle that the attorney-client privilege attaches to third-party consultants also has been applied to representatives of the attorney, such as. The attorney-client privilege belongs to the client, which is the company, not its employees.