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In addition to Darknet Diaries, there is a lot of interesting info in Nicole Perlroth's new book titled "This Is How They Tell Me the World Ends"

Seconding this recommendation. It's a great history of how the exploit market came to be in general.

Darknet Diaries [0] does an episode that involves DarkMatter

You'd have to depend on Google Translate quality but this is a good article https://www.themarker.com/technation/.premium-1.7972249