"Just for reference, just because you have some raspberry pi's running Linux, doesn't really mean you should be saying you run some servers."
Just like you can't say you run servers, because your shit 1P hardware doesn't even come close to my system.
"Second, if you don't know how to detect this, you shouldn't be running servers."
No, they shouldn't be running LINUX. Not that I'd recommend Linux to anyone anyways, given the attitude like yours that's given when people ASK A FUCKING QUESTION.
"Third, if you don't know how to prevent this from being useful, OR you don't take those actions be default, you shouldn't be running anything other than Windows."
If you can't provide an immediate answer to the person's question (How is this detected) then you're just as fucking useless. By the way, since the paper doesn't explain detection methods, only that this was discovered after someone had their server blackholed and was ASKING FOR ASSISTANCE, you can't run to your shit default "RTFA/M" meme, now.
So, start talking, or admit YOU DON'T EVEN KNOW THE ANSWER YOURSELF.