CN113961434A - A method and system for monitoring abnormal behavior of users in a distributed blockchain system - Google Patents
A method and system for monitoring abnormal behavior of users in a distributed blockchain system Download PDFInfo
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- CN113961434A CN113961434A CN202111153349.5A CN202111153349A CN113961434A CN 113961434 A CN113961434 A CN 113961434A CN 202111153349 A CN202111153349 A CN 202111153349A CN 113961434 A CN113961434 A CN 113961434A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 26
- 206010000117 Abnormal behaviour Diseases 0.000 title claims abstract description 25
- 230000002159 abnormal effect Effects 0.000 claims abstract description 41
- 238000007781 pre-processing Methods 0.000 claims abstract description 24
- 238000000586 desensitisation Methods 0.000 claims abstract description 10
- 238000012545 processing Methods 0.000 claims abstract description 8
- 230000006399 behavior Effects 0.000 claims description 69
- 238000004364 calculation method Methods 0.000 claims description 13
- 238000012795 verification Methods 0.000 claims description 7
- 230000005856 abnormality Effects 0.000 claims description 5
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- 238000001514 detection method Methods 0.000 description 4
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/34—Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation ; Recording or statistical evaluation of user activity, e.g. usability assessment
- G06F11/3438—Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation ; Recording or statistical evaluation of user activity, e.g. usability assessment monitoring of user actions
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
- G06F21/6218—Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database
- G06F21/6227—Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database where protection concerns the structure of data, e.g. records, types, queries
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Abstract
本发明公开了一种分布式区块链系统用户异常行为监测方法及系统,通过对用户的行为数据进行预处理与脱敏处理后,从预处理与脱敏处理后的行为数据中提取数据特征,然后将提取的数据特征在区块链的各个节点之间共享,形成完整的数据链,各节点同步该区块以获取处理后的特征数据,然后通过构建孤立树,将所有数据根据某个维度的数据特征分散至该孤立树中的多个分叉上,通过计算数据在由多个孤立树构建的孤立森林中的路径深度与平均路径深度,可以得到检测数据的异常值,有利于克服区块链高维大数据异常监测困难、准确率低的问题,并通过采用分布式算法提升计算效率,为区块链系统交易的安全性提供可靠保障。
The invention discloses a method and system for monitoring abnormal behavior of users in a distributed blockchain system. After preprocessing and desensitization processing of user behavior data, data features are extracted from the behavior data after the preprocessing and desensitization processing. , and then share the extracted data features among the nodes of the blockchain to form a complete data chain, each node synchronizes the block to obtain the processed feature data, and then constructs an isolated tree to combine all data according to a certain The data features of the dimension are scattered on multiple branches in the isolated tree. By calculating the path depth and average path depth of the data in the isolated forest constructed by multiple isolated trees, the abnormal value of the detected data can be obtained, which is beneficial to overcome The abnormal monitoring of high-dimensional big data in the blockchain is difficult and the accuracy is low, and the computing efficiency is improved by using distributed algorithms to provide a reliable guarantee for the security of blockchain system transactions.
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CN202111153349.5A CN113961434A (en) | 2021-09-29 | 2021-09-29 | A method and system for monitoring abnormal behavior of users in a distributed blockchain system |
PCT/CN2021/142711 WO2023050620A1 (en) | 2021-09-29 | 2021-12-29 | Method and system for monitoring abnormal user behavior in distributed blockchain system |
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