https://makezine.com/2017/09/07/secure-your-raspberry-pi-against-attackers/
Raspberry Pi boards are fantastic for any project — they’re cheap, easy to use, can run a wide range of possible operating systems, and provide programmable GPIO pins as well as multi-core CPU availability and multiple USB ports.
You can use Raspberry Pi boards for all kinds of automation and information gathering projects. But, if you are not careful, your little hobby project might result in a security risk that acts as an entry point into your network.
This article gives tips how to secure your Pi project. Most of rhose tips also apply to almost any Linux system.
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Tomi Engdahl says:
Securing Your Raspberry Pi
https://safeandsavvy.f-secure.com/2017/09/18/secure-your-raspberry-pi-and-potentially-your-home/
Raspberry Pi’s not only sound delicious, they are fantastic little computers for all your science, hobby and security needs. They are cheap, easy to use and provide a wide range of possibilities due the fact that several kinds of operating systems can be ran on them, the availability of programmable GPIO pins as well as the multi-core CPU availability and multiple USB ports.
Among other similar mini-computers, F-Secure uses Raspberry Pi’s for all kinds of automation projects as they are quick to set up and easy to use for certain red-teaming and penetration testing operations but also for information gathering setups through the various break-out boards of all kinds that exist for wireless and other technology be it radio links, bluetooth, I2C, Wi-Fi and other applications.
But, if you are not careful, your little hobby project might result in a security risk as an entry point into your network. Attackers might use your Raspberry Pi for their own purposes.