How to prevent malicious requests on java SMS platform

To prevent malicious requests, we should start from many aspects, which has nothing to do with java development language, and other languages are similar:

(1) Prevent a mobile phone number from being submitted frequently at the same time.

(2) The same IP limits the number of visits in one day or the number of mobile phone numbers.

(3) Adding graphic verification code reduces the complexity of the program and increases the difficulty of identifying graphic verification code.

(4) Limit the time for a mobile phone number to trigger secondary reception.

(5) ......

If it is not clear, we can communicate further. We are still professional in SMS platform verification code. I hope it can really help you.