I log onto a site using IE9 (for some reason this particular site doesn't work properly on other browsers) and it kept remembering my username and password. I went into the internet options and changed the the autocomplete setting to not remember passwords or data added in forms, as well as for cookies. I also deleted the browsing history for those fields (pwd, form data, cookies, history). The browser still remembers the info however, and auto logs me in. If anyone knows a solution I haven't tried yet it would be great as I need to use this website but concerned about security.