ModelSecurity is ready for wider use. Please see
http://perens.com/FreeSoftware/ModelSecurity
I would recommend it for anyone who is concerned about security in their
Rails application. It''s not a cure-all (no security feature is), but it
should be an important part of your security implementation.
With the next release, there will be a more stable "release" version
and
a "development" version, so that those of you who do not wish to ride
the bleeding edge will have an easier time.
Many Thanks
Bruce Perens