Dropbox has now introduced two-factor authentication. Why anybody wouldn't switch to it is beyond me, but clicking the via link below will make the option available for your account. You would then go to your account settings and turn it on.
© Copyright 2012 Robert Agcaoili. All rights reserved.
Follow me on Twitter or App.net
Site Feeds: @gridwriter (Twitter) | @gridwriter (App.net) | RSS