[DefCon 2016] I got 99 Problems, but 
Little Snitch ain’t one!

Security products should make our computers more secure, not less. Little Snitch is the de facto personal firewall for OS X that aims to secure a Mac by blocking unauthorized network traffic. Unfortunately bypassing this firewall's network monitoring mechanisms is trivial...and worse yet, the firewall's kernel core was found to contain an exploitable ring-0 heap-overflow. #fail