How to prevent competitors from maliciously obtaining SMS verification code frequently?

The value of a product mainly depends on the users of the platform (number of users, user activity, user conversion rate, user income, etc. ). In order to get the real mobile phone number, it is often verified by SMS verification code. If there is no SMS verification mechanism, the platform is likely and vulnerable to attacks. So what methods can prevent the platform from being maliciously attacked?

1, SMS sending interval setting

2. The mobile phone number limits the number of times to obtain the verification code.

According to the business characteristics of the product, set the maximum daily transmission volume of each mobile phone number.

3, graphic check code/additional code verification

Of course, now SMS agents generally provide anti-theft brush mechanism to do a good job in user safety management. The 253 SMS platform that our company cooperated with introduced the anti-theft brush mechanism when accessing.