Website obtains visitor QQ statistics source code

QQ visitor system source code I don’t know if you have ever had this experience. Why do you receive emails from a website when you haven’t registered any information on a website? Has your QQ number been stolen by a hacker? Or is it a Trojan horse? QQ visitors obtain the source code of the website? All this is due to the trick of obtaining the source code of the visitor's QQ information on the website. Here’s the question, I didn’t leave any information about QQ on the website. How did the website obtain the information? Yes, in principle, if a visitor does not use QQ information to register for the website, the website cannot obtain the visitor's QQ information. However, you can use certain functions of Tencent to obtain the source code of the visitor's QQ statistics.