Direct link to "Business Model of a Botnet" PDF => <a href="https://arxiv.org/pdf/1804.10848.pdf" rel="nofollow">https://arxiv.org/pdf/1804.10848.pdf</a>
Oh, cool. University of Twente makes an SDR available online which I use to listen to number stations. [0]<p>[0] <a href="http://websdr.ewi.utwente.nl:8901/" rel="nofollow">http://websdr.ewi.utwente.nl:8901/</a>