If you secure deleted the entire TBB folder hierarchy and you believe that is a safe method (I don't know myself, but generally individual file overwrites are not safe), then you're good. Bookmarks are stored in /Data/profile/bookmarks.html and Data/profile/bookmarkbackups, which would have been deleted when you deleted the TBB folder hierarchy. Keep in mind, if you're trying to eliminate all traces of the browser bundle on your computer, there may be traces outside of the TBB folder hierarchy. A Tor developer is doing forensic analysis of that, but they haven't done Macs yet. You can read about the Windows and Linux analysis here: http://dkn255hz262ypmii.onion/index.php?topic=148291.0 Hopefully in another month she will post the results for Macs.