http://cypherpunk-handbook.i2p/articles/openbsd.html
The philosophy and development of OpenBSD focuses on
minimalism and security, the devs understand that a clean and
minimalist code will lower the attack surface and do so. By using a Linux distro, whatever it may be, even if it's Gentoo or
Linux from Scratch, you'll be dealing with tens and even hundreds of
millions of lines of code, maybe billions of lines of code.