Schneier on securing data at rest vs securing data in motionhttp://blogs.msdn.com/b/lcris/archive/2010/10/05/schneier-on-securing-data-at-rest-vs-securing-data-in-motion.aspxHere's an interesting older article from Bruce Schneier on securing data at rest , which goes over some of the points I mentioned earlier in my Who needs encryption? post.en-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)