Small module and userspace program to prevent predefined apps from running.
You need kernel headers installed (sudo apt-get install linux-headers-$(uname -r). Also, gcc is a must (sudo apt-get install gcc). Compile by running 'make'. Then "insmod ./secmod.ko", and launch "./seccon_user". By default, list of prohibited apps is taken from seccon.conf file in current directory. Tested on Ubuntu 12.04 x86, Ubuntu 14.04 x86_64.