➕ Add The Ultimate Raspberry Pi Security Guide

Author: thibmaek

README.md

@@ -107,6 +107,7 @@ Contributions *very welcome* but first see [Contributing](#contributing)
 ### Articles
 - [Raspberry Pi and why do I need one?](https://www.liquidlight.co.uk/blog/article/raspberry-pi-what-is-it-and-why-do-i-need-one/) - Intro into the Raspberry Pi and what can be done with it.
 - [10 Ways To Power](https://raspberrypi.about.com/od/Power/tp/10-Ways-to-Power-your-Raspberry-Pi.htm) - Information about different & correct ways to power the pi.
+- [The Ultimate Raspberry Pi Security Guide](http://www.nhatqbui.com/assets/TheUltimateRaspberryPiSecurityGuide.pdf) - Extensive guide on security best practices for the Pi ie. exposed to the internet.
 
 ### Tutorials
 - [Bridging Wifi to the Raspberry Pi over Ethernet](https://blog.thibmaekelbergh.be/2015/02/16/bridging-wifi-to-the-raspberry-pi-over-ethernet.html) - Set up tethered networking between macOS & Raspberry Pi.