Yes I can see all their emails, read them, see sent ones, see attachments, look at their calendar, EVERYTHING! I'd rather not post a screen shot just for security but I can see their hotmail account the same as I see my own and can do everything. If I open a hotmail sign in page and try and sign in as them I can't as I don't know the password but if I sign in as me and then go into theirs it's ALL there!
Obviously this is why I'm so worried about what's going on and just the security in general.