Set up an OrNetRadar replacement

It seems nusenu shut down OrNetRadar at the end of last year (2020). I just noticed it as mails where not coming through anymore. They did not reply to me (among other things) mentioning that fact.

It's been a very useful tool helping us correlate malicious actors much, much easier than without it. Thus, we need a replacement. What makes this harder is that nusenu did not share the code or some setup documentation. So, we need to start almost from scratch. :(