These black chains are placed on your website, and you can view the source files of web pages by viewing the source files below through the browser. Your website should be familiar with some external links below the website. If you find unfamiliar links, most of them are put by people who put black links. Then you should pay attention.

View the generation time of the file.

If your website is dynamic, there shouldn't be many files, so be sure to pay attention to the generation time of files. For example, you uploaded it to. 1.2 1. If the time of a file is changed to the current time, people may tamper with it. At this time, you'd better check the file to see if there is a black chain.

If your website is static, you should check the generated home page file more often. If one day it is not generated, or the time is now, you should pay attention. In this case, most of these people who put black chains enter through bugs on the website and directly enter the background to add.

Change ftp user and password.

Some people who put black chains are released through your ftp blasting. At this time, we should pay attention to changing ftp users and passwords frequently, which is more secure. Don't wait until something goes wrong to change your password.

View the source files of websites on the same server.

If your website has black links, you are checking other stations on the same server. If other stations have black links, there is only one possibility, that is, there is a bug in this server. You'd better inform the space provider to handle it, so it will be safe. Whether it is a black link or not, you can know at a glance that if a normal webmaster can't put a lot of black links on his website, there is only one possibility, that is, others put them.