This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
What do you mean by a "security feature"? And how do you know that there are various?
You might want to read the security book from manuals.rubyonrails.com and, if you consider "security" to include authentication and authorization, continue to browse the long list of authentication-related resources in the wiki. Note that the stuff that's listed in the wiki are not part of Rails itself but are provided as plugins by the community. [ January 31, 2007: Message edited by: Lasse Koskela ]