How to intercept malicious SMS verification code

You can use the user to send a short message to the specified mobile phone number for verification, so there is no risk of being swiped, and it is also intercepted.

The short message market is becoming more and more perfect, and more and more people use short messages for marketing and notification. However, as we all know, SMS has a cost. Although the cost is low, it is also money, so there will be a number of malicious clicks. Malicious clicks on SMS interface verification code will cause a waste of resources.

Lose a lot of money. Generally speaking, in order to prevent some people from obtaining SMS verification code repeatedly, website development will restrict the access to SMS verification code. Help enterprises prevent malicious access to SMS verification code. Specific restrictions to avoid malicious access to SMS verification codes can be divided into the following three points.

Time: There is a time interval when users get the verification code, which is generally 60 seconds. If the user still does not receive the verification code message within 60 seconds, he can click the "Get Verification Code" button again. The valid time limit of the verification code is to prevent criminals from using violent means to crack it.

General SMS service providers will remind enterprises to set the effective time of verification code, and the verification code will be invalid after the effective time. About the number of times: SMS verification code can't be requested as many times as you want, so as to avoid some users clicking frequently, because most of the time people won't register or operate too many times.

Therefore, if users frequently send verification code requests to the background for many times (all with the same mobile phone number), they can't be used normally after meeting the limit. In terms of frequency, users do not always enter the SMS verification code correctly when modifying passwords and registering some accounts.

Then the verification will be considered invalid. Because the normal and standardized verification code short message can be delivered in a very short time, and users can generally complete the input within the effective time, so as to prevent the suspicion of malicious attempt to input and protect the user's account security. The above method is to summarize how to prevent the interface of SMS verification code from being maliciously clicked, which I believe will effectively solve the problem.