Training of risk control model, risk control method, device and equipment for identifying embezzlement of secondary release account

Abstract

The embodiment of the specification disclose risk control model training, a risk control method, a device and equipment for identifying the embezzlement of a secondary release account. The scheme includes: acquiring transaction-related data of multiple accounts; obtaining a qualitative tag of the account transaction according to the historical account transaction included in the transaction related data, wherein the qualitative tag indicates whether the corresponding account transaction belongs to a secondary loosening account embezzlement event; extracting the following two types of risk characteristics of each account transaction from the transaction related data: the corresponding mobile phone number belongs to the address book system and the user name between the account system is identical, and the corresponding account is identical with the mobile phone number between other accounts with the same identity; using the obtained qualitative labels and extracted risk characteristics as training data, a supervised model being trained to identify the embezzlement of the secondary release account. The trained supervised model is used to identify the embezzlement of the secondary release account.

Description

technical field [0001] This manual relates to the technical field of computer software, and in particular to risk control model training, risk control methods, devices and equipment for identifying misappropriation of secondary number distribution accounts. Background technique [0002] Mobile phone number resources are owned by the state, and users only have the right to use them. Due to the limited resources of mobile phone numbers, when a user deactivates a mobile phone number, the mobile phone number will be reclaimed by the communication operator. After a period of freezing, the mobile phone number will be re-entered into the market after a period of time, that is, the second number allocation. At present, the state stipulates that the minimum freezing period of mobile phone numbers is 90 days. [0003] With the development of the mobile Internet, more and more Internet platforms use the mobile phone number directly as the user's account, or as the identity identifier ...

AI Technical Summary

Problems solved by technology

New mobile phone number users or some lawbreakers will take advantage of this risk loophole to log in and operate accounts on these Internet platforms by pretending to be the original user's identity through SMS verification, resulting in the loss of funds and information leakage of the original user

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