1.7 ORGANISATION OF THE STUDY This work is organised in five chapters. The first chapter is the introduction to this work. It basically deals with problem statement, research questions, method, objective and significance of the study. The second chapter is the literature review. Here a brief overview of wireless local area network technology is presented. The third chapter is on WLAN standards. This chapter gives a description of all the available IEEE 802.11 family of standards. The fourth chapter is wireless LAN vulnerabilities, threats and countermeasures. It describes in details all known wireless LAN attacks, and explains how to mitigate them through vulnerability assessment. The fifth chapter gives the conclusion, summary and areas of future research.