He's not an 'expert' - simply a bright young man with a huge interest in computers and programming. He's only 18 so hasn't really had time to become an expert. He is taking computing at degree level from September but is currently only at A level stage - all he knows is self taught.

I doubt he's good enough to crack encrypted data.

I'd really love Stylish or Salem to reply to my last post before this one, if either of you get a chance please

Those shares do not look out of the ordinary. However, I am not familiar with Windows Vista shares. Windows XP added a "Shared Docs" folder, which is available to all users on the same local machine (not shared over the network) and it looks like those two shares are an extension of that idea.

Again, I do not know fully whether those are trouble or not.
"Public: C:\Users\Public" sounds fine - a Public accessible share on a blatantly labeled Public folder. Nothing surprising there.

I am unsure what "User: C:\Users" is sharing and who has permissions. Hopefully someone more familiar with Windows Vista file sharing can chime in. It does not sound bad (Users can access the Users folder, seems to make sense).