Attack detection method and device and electronic device

Abstract

The embodiment of the invention provides an attack detection method, which comprises the steps of determining a first node according to identification information when the identification information of each node of a new block is generated within a preset first time interval; calculating the obtained continuous blocking rate of the first node in a preset first time interval; and detecting whetherthe block chain network is attacked or not according to the continuous block rate and a preset first judgment condition. Aiming at the problems that in the prior art, when an attack occurs and asset loss is caused, the attack can only be deduced according to the asset loss, and whether the attack is caused cannot be detected in time. According to the method provided by the embodiment of the invention, whether the block chain network is attacked or not can be detected in time, so that when the block chain network is detected to be attacked, countermeasures can be taken in time, and asset loss is reduced. According to the method provided by the embodiment of the invention, whether the block chain network is easily attacked or not can be detected before the attack occurs; Therefore, the attack can be avoided before the attack.

Description

technical field [0001] The invention relates to the technical field of block chain attack detection, in particular to an attack detection method, device, electronic equipment and storage medium. Background technique [0002] Each node in the blockchain network uses the same algorithm for mining. This algorithm is called a consensus algorithm, and the commonly used consensus algorithm is the POW (Proof-of-Work) algorithm. Among them, mining refers to: generating a new block, and the POW algorithm refers to: within the preset time interval of block generation, if any node in the blockchain network wants to generate a new block and write it into the blockchain, It is necessary to solve the pre-set proof-of-work problem of the blockchain network, and the node that solves the problem the fastest will broadcast its calculation results to the entire network. After receiving the calculation result, other nodes in the blockchain network use the same algorithm to verify the calculati...

AI Technical Summary

Problems solved by technology

In this way, since the currency price of the virtual currency will change at any time with the change of the number of blocks and the change of the transaction volume, the forged blockchain will cause asset losses to those involved in the virtual currency transaction

[0005] However, the inventor found that for the 51% attack, the existing technology usually only infers the attack based on the asset loss after the attack occurs and causes asset loss, and cannot detect whether it is attacked in time

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