Wal-Mart's Answer To Apple Pay Has Already Been Hacked Read more: http://www.businessinsider.com/currentc-hacked-2014-10#ixzz3HYgaAI8P

Here's a bad sign for CurrentC, the fledgling mobile payment system in development by a consortium of retailers. 

CurrentC is sending emails to people who signed up for the beta version of the app warning them "that unauthorized third parties obtained the e-mail addresses of some of you."