A few days ago, when I was helping a multinational company make a website plan, I found several websites of their peers on the Internet for reference. Since most of the websites are in English, I use Google’s translation tool. I accidentally discovered that many foreign websites had dozens or dozens of bad links on them. As the name suggests, black links are illegal links, because most black links are linked to "unhealthy" websites. Once a website has too many black links, it will eventually be blocked by search engines. Because no search engine likes such a shameful practice.
Coincidentally, recently, various numbers of black links have appeared on the websites of some clients of my company, which has to attract our attention. In the past, some hackers hacked other people's websites as a prank to show off their achievements. Later, they developed into threatening some websites and even stealing customer data. However, the prevalence of black links, this disgraceful gray hat technique, seems to have allowed hackers to find new profit points. Baidu suddenly realized that black links now seem to have become an industry chain. Some people are responsible for technology, while others are responsible for the sales of black links, and they are also euphemistically called "dark links".
For those websites with relatively high PR values, more attention should be paid to prevention. A new website does not have a high weight, and the links will not play a big role. But for a website with a PR of 4 or above, hackers can use it to make money by linking it to a black link. Perhaps inadvertently, your website has been linked to external links with bad information, and such external links are generally impossible to find unless you are a very professional technician.
Regarding the rampant black links, the only thing we can do is to strengthen the security of website data and check our website regularly in a timely manner. In fact, it is very simple to operate. You just need to right-click on a blank space of the web page to view the source file of the web page. If you find any problems, you can fix them in time. Nowadays, black links are so rampant that they are not only posted on the homepage, but also on many inner pages with bad information. Regular and irregular data backup of the website is also very important. After all, it is a waste of time to check and delete the black links one by one. If you have a backup file, just overwrite the original source program.
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