Non members viewing this site

Hope admin is reading this as i would like to complain about the ability of any non member looking on the site, i think there is too much available on show. I do not want my profile and any activities to be seen by anybody, I feel it is not private enough. A friend of mine who is not a member told me all the site is available to view. I'm not happy with that situation. I think it should be just an over view of what the site is like. Forester33