Why did you find all the mobile phone numbers in my name? Send me a reminder and call me.

Because the real name is registered, it is checked through identity information and address book.

The first kind of "selling" of address book friends: cards will require emergency contacts, and many apps will require authorization such as address book. The second way is to find your new number through the ID information: when handling the mobile phone number, the operator will ask to use the real name of the ID card. Your ID card information will be left when you apply for a new mobile phone, and the collection company will use this information to obtain your new mobile phone number. Third social security information: many users will fill in social security, provident fund account number and other information when they apply for cards or loans offline. Once you have a new job, the other party can find you through your current social security payment unit.

Now a lot of users' information is platform * * *, which will leave some information. For example, if you buy something online, you will naturally leave a new mobile phone number, so at this time, you can get your new mobile phone number through big data combing. Generally speaking, from the beginning of the application, the information has been "leaked" to the other party by various authorized and informed accounts agreed by the user, and the collection is traceable. At present, it is the era of big data. What information do you generally want from you? As long as creditors want it, then the problem is not big. Every APP in your mobile phone can get your information, and creditors will also cooperate with third-party big data companies, so it is not advisable to escape.