Why do I have to enter the verification code every time I add someone else's QQ? Thank you, everyone.

Recently, a large number of Q friends have asked this question. The trouble that verification code brings to many Q friends. The strategy of launching verification code is mainly to protect your rights and interests, in order to prevent hackers from scanning your password by logging in with malicious software. But many people don't understand this. Because of the seriousness of this kind of problem, I personally added some Q friends who need to enter the verification code, and got some questions from it. Everyone has been discussing why there is such a verification code. In the survey, it is found that many QQ friends generally have two or more Qs, but not all of them need to enter QQ, just one. The result is obvious. Now I will summarize these rules into the following reasons: 1. Maybe you have used some unofficial software to log on to QQ, or hung QQ on the website. 2. I have logged into Q in some unsafe places, such as Internet cafes with unsafe factors. There is a virus Trojan in your computer. For example, if you are infected with a virus, you send some virus messages or deceptive messages, which are all caused by viruses. 4. Malicious QQ messages, being reported, forcibly deleting a large number of friends. At the same time, please don't provide your password when you log in the number, so that your friends can log in and try your QQ in other places. 6. It may also be caused by network problems, such as using proxies and unstable networks. Solution: Please use anti-virus software to thoroughly kill your computer in safe mode. I suggest you clear the local chat record of this number (search the QQ installation directory for the folder named after this number to delete! In the meantime, please uninstall all previous QQ versions and download the latest official QQ version for use. There is also the QQ number of the report. Please wait patiently for the observation time to pass. Over time, the verification code will disappear, but you need to do it again. The user number has two main numbers, so it is necessary to enter a solution to the problem of verification code. Recently, it has been found that a large number of numbers have two main numbers (that is, two people know that the number password is used in different places at different times), and the original number owner is not easy to find, so we introduce verification code to attract the attention of the real number owner and reduce the loss of the original number owner. I hope everyone will strengthen their awareness of number prevention and jointly create a green and healthy online environment. The following are the specific reasons and solutions: specific reasons: 1, sending advertising messages: that is, you may be used by others to send advertisements or scam messages without your knowledge, thus being detected by the system. 2. Remote login: that is, your number is often logged in one place. When you suddenly detect a change in the landing place, a verification code will be added for security reasons. 3, the number has a hang-up behavior: under normal circumstances, the hacker will steal the user's property and number by helping the user hang up. Solution: 1 Change the password immediately after finding the verification code and kill the Trojan horse. 2. Enter the observation period after the verification code is needed, and the system will automatically log off after normal use of 10 ~ 20 days. If the password is leaked again during this period, you will continue to be asked to enter the verification code.