I recommend Marc-André Argentino's research on the Com; he's a conspiracy researcher who got his PhD on QAnon. He leans left, if that's a factor for you.
That piece doesn't get specific at all about Com activities but be aware that some of the manifestos and other material he discusses is quite disturbing.
He cites same journalist Krebs that has no cybersecurity background. Even Marc-André Argentino himself is a master of arts in theology and not a real cybersecurity specialist.
Nah, he has a PhD from Concordia’s individualized program, supervised by professors from both Theological Studies and Information System Engineering. But it’s true that he’s not coming at this from a cybersecurity perspective, he’s an extremism researcher.
I wouldn’t rely on him to evaluate how good someone is at exploits and so on. I do respect his research skills and his ability to evaluate weird cult manifestos.
This coming from Gyudin, who cites no credentials and is not a real journalism specialist. See? Real easy to discredit someone by credentialism. Instead, you can read his article and take apart his points, since you're unsatisfied by his interpretation
His general overview: https://www.maargentino.com/the-pillars-of-the-com-network/
That piece doesn't get specific at all about Com activities but be aware that some of the manifestos and other material he discusses is quite disturbing.