My friend bought a software and sent me a verification code, which is the verification code of Jiehui Network. Does it have any effect on me?

If the verification code is sent to you, it will affect you, because the verification code is usually sent to the verifier's mobile phone.

CAPTCHA is the abbreviation of "automatic public Turing test to distinguish between computer and human", which is a public automatic program to distinguish whether users are computers or humans.

It can prevent malicious password cracking, ticket brushing and forum flooding, and effectively prevent a hacker from constantly trying to log in to a specific registered user and using a specific program to violently crack. In fact, using verification code is a popular way for many websites now, and we have realized this function in a relatively simple way.

This question can be generated and judged by computers, but only humans can answer it. Because the computer can't answer CAPTCHA's question, the user who answers the question can be considered as human.

Mobile phone verification code is the most effective verification code system by sending verification code to mobile phone. Large websites, especially shopping websites, provide SMS verification code function, which can accurately and safely ensure the safety of shopping and verify the correctness of users.

Some authentication code providers provide SMS authentication code service. Each website sends a request to the provider's server through the interface, and the server sends random numbers or letters to the mobile phone, and the provider's server verifies the authentication code uniformly.