>security-focused Linux distributions
>Kali
I don't even know where to begin with this one...
Kali definitely is not "security focused", it JUST a pile of scripts added on top of flavour of the month Debian. At least in Backtrack days it tried to be all secure and invisible and sneaky and shit, but then noobs complained since they couldn't figure how to start X or how to enable network interfaces.
Now it's just bunch of script kiddies running shit they know nothing about and then crying when some version update breaks random dependency they weren't even aware of.