Here is an excerpt of my review, the full review can be found on my blog which is linked from my profile page.
Cracking Drupal: A Drop in the Bucket is the first book specifically discussing vulnerabilities in the Drupal Content Management System. However, is it all it's 'cracked up' to be?
Well, you will have to decide for yourself, but I would recommend this book for almost all intermediate+ Drupal users. It will get you thinking about security in Drupal, provide recommendations for tools that will help you implement that security, and generally leaving you with a stronger understanding of the whole Drupal stack. However, if you are a seasoned Drupal veteran you may want to give this a pass or just take a gander at it from a friend's copy or a library, as much of the material is already known to hardcore Drupalers (e.g., if you are a core contributer, you probably don't need this book, but then again you don't need me to tell you that).
