Risk control model training, risk control method, device and equipment for identifying misappropriation of secondary allocation accounts

Abstract

The embodiment of this specification discloses a risk control model training, a risk control method, device and equipment for identifying misappropriation of secondary number distribution accounts. The scheme includes: obtaining transaction-related data of multiple accounts; for the historical account transactions contained in the transaction-related data, obtaining the qualitative label of the account transaction, the qualitative label indicating whether the corresponding account transaction belongs to the secondary allocation Account misappropriation events; the following two types of risk characteristics of each account transaction are extracted from the transaction-related data: the consistency of the user name between the address book system and the account system to which the corresponding mobile phone number belongs, the corresponding account and the same identity Consistency of mobile phone numbers between other accounts; use the obtained qualitative labels and extracted risk features as training data to train a supervised model to identify misappropriation of secondary account distribution; use the trained supervised model to identify secondary Number distribution account theft.

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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