What does network operator hijack mean?

This means that logging in with a web page will add all kinds of advertisements to your web page that are not on the page.

The main forms of network hijacking:

Domain name hijacking, the user wants to visit website A, but the domain name is resolved to other addresses, so the user can't access the page he wants to visit normally, and the website traffic is damaged. If the domain name is resolved as a malicious phishing website, the user's property will be lost. For example, online users originally wanted to visit a well-known financial website, but they were jumped to another fake website with a very similar appearance, thus obtaining user data, which led to heavy losses for enterprises and users.

2. Some Internet hijackers will pop up advertisements on websites, but not all websites will play advertisements. Generally, large-scale portals do not advertise, which will make people think that some websites will pop up, which will directly affect the reputation of the websites operated by the company in the eyes of users and harm the interests of the company. Even if you change DNS, you can play. Most people think of DNS hijacking. Now the operator has changed his mind and hijacked it with the gateway, so all users' traffic can't escape. In particular, some operators are becoming more and more arbitrary. Seriously affected enterprises may apologize and rectify after complaining to the Ministry of Industry and Information Technology, and will soon start playing hooligans again.

3. With the continuous development of the network, Web-based App(B/S architecture application) has developed in full swing in recent years, but its underlying protocol has not been greatly improved-HTTP, everything is transmitted in plain text, and the traffic can be controlled at will on the way. On the other hand, the WebApp used on the Internet has not only communication data, but also program interfaces and codes, so it is easy to be hijacked by hackers.

4. Unsafe Wi-Fi and cookie are everywhere. If you use HTTP in public places (such as public WiFi or Internet cafe computers), you will be hijacked if you don't log in. On their own devices, everyone remembers the login status of various accounts. Anyway, it's just for my own use. It's no big deal. However, in the publicly hijacked network, even if you browse ordinary web pages, there may be a silent spy script hidden in it, which is secretly visiting the web pages you log in and manipulating your account.