SMS Platform: Why is SMS authentication stolen? Is there an industrial chain?

If it is malicious to brush the verification code, it is estimated that the client platform, website and APP have no verification code such as graphics and text, and it is more difficult for the program to maliciously trigger the verification code. This situation can be found from the source of the trigger message and located step by step.

In order not to let others know that they did it, some people maliciously called the verification code, bombed the software with short messages found on the Internet, and sent harassing short messages to others.

As for the stolen brush you mentioned, I'm not sure it's the kind mentioned above. Please forgive me or leave a message if the explanation is not in place. I hope my answer can help you a little.