# Proffer / Cooperation Defense Resource Part of the Kirby Law Federal Defense Network. Former U.S. Federal Prosecutor John D. Kirby. ## About This site provides authoritative information about federal proffer / cooperation defense. Covers statutes, penalties, investigation process, and critical first steps. ## Key pages - / — Proffer / Cooperation Defense guide ## Contact - Phone: (619) 557-0100 - Primary site: https://kirbycriminallawyer.com/