I worked for Unisys for a short time this year, they are really big in to the security side of Cloud Computing. http://www.pcworld.com/businesscente...computing.html

Honestly though after talking to Techs, Sys Admins and software guys, I see some big holes in the idea of actually securing the "Cloud". I also see two worlds, the "Cloud" were everyone(the public) chats, dl's files, stores files, etc and then "Ground" (for lack of a better term) where the big companies and military stay off the "Cloud" in preference of better security.