These can only be found by browsing the company's servers. If you delete this record, ordinary people can't view it. But technically, data can also be recovered by tracking IP, but only if the searcher has the authority or legal permission, for example, the police can track the chat records of criminals. It is illegal for ordinary people to do so, and there is no such superb technology.
In most people's cognition, such websites mainly spread obscene information, which is easy for some friends with poor self-control to indulge in, and has a great impact on users' physical and mental health. At the same time, unhealthy websites do more harm than this. They will collect visitors' information through various external links and then commit fraud. In order to protect consumers' physical and mental health, websites containing such content are defined as illegal websites in China. Some lawless elements take risks in order to make huge profits. They set up websites on foreign servers to escape domestic supervision. Most of these websites are free, how can they be profitable? There are three main forms of realization of these websites. One is that the website divides the content into paid parts and free parts, with less free content and poor quality. In this case, those who have tasted the sweetness choose to pay to become members. The other is to earn income through advertising. We often have colorful advertisements on the home pages of some websites, most of which are non-compliant. The last one is to collect user information through the website and sell it.