We often get promotional information. How do they know our phone number?

We often get sales calls, and our phone number is leaked through the following channels.

First, fill out the application form. This year's CCTV 3 15 party reported that some recruitment websites sold the resumes of candidates to criminals in batches, and then these people. Sell the applicant's personal information in various ways.

Secondly, the communication company leaked our phone number. If we want to use the telephone, we must go to the communication company for formalities. We will not only leave the information of identity documents, but also leave the contact information of telephone numbers. If the communication company resells this information, our information will be leaked.

Third, through the express delivery or take-away platform, our phone number information was leaked. Nowadays, many people are using take-away and express delivery platforms for the convenience of life, but if these take-away and express delivery platforms lack legal awareness and resell our information, our phone number will be leaked.

Fourth, through the way of "taking eggs". Now some businesses engage in promotional activities, as long as they leave their contact information, they will send eggs or give other gifts. Some elderly people couldn't stand the temptation, so they took part, and finally the phone number information was leaked.

Fifth, our phone number was leaked through "big data". Now our hobbies and habits in daily life will be tracked by big data on the Internet. If it is used by illegal businesses, institutions or even companies, our information will be leaked.

Sixth, by mailing magazines and so on. I mailed magazines to my old father several times, and as a result, the magazines leaked my father's phone number information. Since then, various magazines have been sent from home, including many medical advertising magazines. Then my father was cheated. These unscrupulous magazines leaked the telephone number information of my old father, which caused a lot of trouble to our family.

In short, in modern society, information disclosure has become an important aspect that infringes on our legitimate rights and interests. Now many fraud cases, including telecom fraud, are related to our information disclosure.