Samsung has been stepping up its game for enterprise security. Their latest offering is KNOX, which will be available on the Galaxy S 4 soon. KNOX not only addresses the security needs for enterprise, but it also addresses the concerns for employees personal privacy. In a nutshell, it keeps work stuff separate from personal stuff by creating two different personas on one phone. It appears the U.S. Department of Defense will grant an approval for Samsung Galaxy smartphones (most likely the Galaxy S 4) as well as Apple iPhones and iPads.