WARNING - DROPBOX CIRCUMVENTS YOUR MAC SECURITY. Its implementation of an official OS X security dialogue box is designed to mislead users into handing over admin passwords in order to grant Dropbox root access to the system via the Mac’s Accessibility permissions list. This is dangerous on multiple levels. Dropbox has apologized for this, but hasn't removed this invasive problem. It's an attack vector for malware and Dropbox has only offered vague reasoning for needing Accessibility API as well.