An anonymous individual or group claims to have obtained "all available" tax returns associated with Republican presidential candidate Mitt Romney. The alleged hackers claim to have accessed them via computers in the Franklin, Tenn., office of professional services firm PriceWaterhouseCoopers. An anonymous posting on a file sharing website claims PwC was hacked; the same site has been used to boast of other high-profile corporate hacks. How'd they pull it off, allegedly? The posting states: "[Romney's tax returns] were taken from the PWC office 8/25/2012 by gaining access to the third floor via a gentleman working on the 3rd floor of...