Information systems are becoming more integrated into the people lives. As this integration deepens, the importance of securing these systems increases. Because of lower installation and maintenance costs, many of these systems are largely networked by wireless means. In order to identify gaps and propose research directions in wireless network intrusion detection research, the authors survey the literature of this area. Their approach is to classify existing contemporary wireless Intrusion Detection System (IDS) techniques based on target wireless network, detection technique, collection process, and trust model and analysis technique.