Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Thorough, yet approachable introduction to 802.11b security

The authors have done an admirable job in making this complex topic approachable by readers with a basic understanding of networks. The coverage of cryptography was just enough to support the discussions on WEP cracking. I particularly enjoyed the step-by-step description of actual attacks. The overview of existing tools was also very good, though I detected a certain bias towards Microsoft solutions. Overall, this great book has earned an important place on my bookshelf. Kudos.