We manually analyzed each publicly accessible forum on
this list, and for each that was still online and had at least
100 threads in scam-related sections, we (1) exhaustively
crawled its public content and (2) recursively applied the
same process to discover other candidate forum URLs. We
ultimately identified and crawled four forums suitable for our
analysis: Nulled.io (NULLED), SocialEngineered.net (SENet),
Sinister.ly (SIN), and MPGH.net (MPGH).