Attorneyclient privilege is a rule that protects communication between a lawyer and their clients. • For the privilege to apply, the communication must generally satisfy two requirements: The in-house counsel must have been acting in the role of an attorney.Attorneyclient privilege is a protection meant to create trust between you and your lawyer so you can share every detail of your case. Communications with outside counsel are presumed to be privileged. This publication is not intended to provide legal advice but to provide general information on legal matters. This Wisdom of the Crowd (ACC member discussion) addresses concerns and tips for managing attorneyclient privilege in an open office environment, under US law. Court Adopts "Primary Purpose" Test for In-House Counsel's Dual-Purpose Emails. Illinois is one of only eight states that applies the narrow "control group" test to applying the attorney-client privilege in the corporate setting. Readers requiring legal advice on any specific case or circumstance should consult with counsel admitted in the relevant jurisdiction. Readers requiring legal advice on any specific case or circumstance should consult with counsel admitted in the relevant jurisdiction.