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Abnormal account detection method and device

A technology of abnormal accounts and detection methods, applied in the computer field, can solve problems such as leakage of user accounts and keys, economic losses, etc.

Pending Publication Date: 2019-11-05
ADVANCED NEW TECH CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the user terminal is hacked, it is very easy to cause the user's account and key to leak
After the hacker steals the user's account and key, he can use the user's account and key to log in to the blockchain node and conduct transactions, thereby causing economic losses to the user

Method used

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  • Abnormal account detection method and device
  • Abnormal account detection method and device

Examples

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example 2

[0096] Example 2, the first attribute is an IP address, the blockchain node judges whether the first attribute is an abnormal attribute, and the process of determining the risk score of the first attribute is: if there is a transaction time of adjacent transaction logs in the transaction log set If the time interval is shorter than the second preset time length and the IP addresses are different, then the risk score for the IP address is determined as the first preset score for the IP address.

[0097] In implementation, the second preset duration may be pre-stored in the blockchain node. Wherein, the second preset duration can be set by a technician based on experience. The block chain node can determine whether there are adjacent transaction logs in the transaction log set, the time interval of the transaction time is less than the second preset time length, and the IP addresses are different. If the transaction time interval of adjacent transaction logs in the transaction ...

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Abstract

The embodiment of the invention provides an abnormal account detection method and a device, and relates to the technical field of computers. The method is applied to a block chain node in a block chain network, and comprises the following steps that: firstly, the block chain node acquires a target block of which the timestamp belongs to a preset time range according to the timestamp of each blockin a block chain, and acquires a transaction log set corresponding to a target account from transaction logs contained in the target block; then, for each target attribute in the transaction log set,the blockchain node determines a risk score of the target attribute in the transaction log set at least according to an attribute value of the target attribute in each transaction log and an abnormalcondition preset for the target attribute; then, the blockchain node determines a total risk score of the transaction log set according to the risk score of each target attribute in the transaction log set; and if the total risk score is greater than a preset score threshold, the blockchain node determines that the target account is an abnormal account. According to the abnormal account detectionmethod, the abnormal account can be detected.

Description

technical field [0001] One or more embodiments of this specification relate to the field of computer technology, and in particular to a method and device for detecting abnormal accounts. Background technique [0002] Blockchain technology is built on a point-to-point (P2P) network, using a chained data structure to verify and store data, using a distributed node consensus algorithm to generate and update data, and using cryptography to ensure data transmission and Access security, a new distributed infrastructure and computing paradigm that uses smart contracts composed of automated script codes to program and manipulate data. Because of its weak centralization, non-tamperable, and inclusive advantages, it is widely used in the financial industry. [0003] Accounts and keys (such as public keys and private keys) for users to access blockchain nodes in the blockchain network are usually saved in the user terminal in a text file format. When the user terminal is hacked, it i...

Claims

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Application Information

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IPC IPC(8): G06Q20/40G06Q20/38
CPCG06Q20/4016G06Q20/3829
Inventor 方思羽左军
Owner ADVANCED NEW TECH CO LTD
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