The underground industrial chain of China's cyber black gold market has become industrialized, with a one-stop service for account theft and sales. The upstream of the underground industrial chain consists of people who specialize in making hacker tools. The midstream comprises network attackers and abusers of hacker tools, who launch various network attacks or use hacker tools to create botnets, which are then rented, sold, or used for extortion, all with clear divisions of labor. The downstream consists of intermediaries and buyers; as soon as you create a botnet, there will immediately be someone online to help you sell it. There are plenty of intermediaries on the internet; if one doesn't work out, you can always switch to another. Buyers purchase botnets, of course, to attack others.
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