Greenberg was named Justice Professional of the Year in 1991 by the Southern Criminal Justice Foundation, received the Foundation for Improvement of Justice 1989 Achievement Award and the Free Spirit Award from the Freedom Forum in 1994 for distinguished success in fighting crime.
גרינברג זכה בתואר "Justice Professional of the Year" ב-1991, קיבל את אות "Foundation for Improvement of Justice" לשנת 1989 ופרס "Free Spirit Award" ב-1994 על ההצלחה בתחום הלוחמה בפשיעה.