Good Reads on the Unix Security Scheme
The more I learn about the Unix security system, the more amazed I am with how well it accomplishes so many taks while remaining very lightweight with just 12 bits of permissions per file. With my newfound better understanding of the setuid and setgid bits, specifically at how they behave differently when applied to directories and files, I am now starting to think I have a pretty good grasp of how the Unix security scheme works, and how to make it both high security and highly usable. User Private Groups is in my view the best way to set up a user-friendly filesystem that allows for higher-than-average security and higher-than-average usability for webmasters.