In the video it looks like they are using an option in superuserex to modify permissions, but superuserex requires recovery to update the binary code. I installed the apk and updated chainfire superuser, so I'm wondering if any more security is necessary. I found this app https://play.google.com/store/apps/d....security.lite
but it doesn't seem to work with kitkat. I noticed some threads about LBE but wasn't able to figure out if there is a fix to use it on my phone and mabey my SM-P600.
I found this video from IEEE