"SharePoint 2007 contains a lot of options for security configuration.
In larger site collections, it is very easy to lose the overview of how the security in your site collections is configured. Publishing parts of the content in your site collections for anonymous users, makes this even harder. And if you grant your power users the permissions to manage the security settings themselves, it suddenly is impossible to keep an overview. If you have done support for a SharePoint environment and have tried to solve security issues, you probably are familiar with this problem. Security blueprints can help you in this scenario.
These blueprints are a report of all security related settings in your sites. In the first version of the product, these reports are published as XML files. By creating your own XSLT stylesheets, you can use this product to create your own reports on the security setup of your SharePoint sites."