In the last section of this chapter, we will talk about security. Raspberry Pi Zero W is great but no one wants to just plug it in your router and let others control your lights, your coffee machine, and anything else you have connected there. To begin with, the truth is that you cannot be secure from anyone. This means that there are levels of security that you should consider. At this point, you should consider from whom you want to be secured. For example, there are techniques for securing your Raspberry from your family, from your friends, from anyone in your house, from typical users on the internet, from advance users on the internet, and from NSA.