php - The company's SMS interface receives thousands of messages every day. How to solve this problem? ? ?

Question

IP has been restricted, and the number of messages sent per day has also been restricted. Is there any other way?

Is it because the verification code is too simple?

I think there is special software to flash this. But now I don’t know what to do

Answer 1

The verification code can basically block a large number of malicious crawlers by using the slider verification code, and then restrict the IP and number. Basically, no one can hack. It’s not that hackers can’t get in, but it’s not cost-effective. If there are still malicious problems , please check your own code for vulnerabilities