METHOD AND SYSTEM FOR DETECTING ABNORMAL VISITS TO WEBSITES Russian patent published in 2022 - IPC G06F16/95 

FIELD: search engines.

SUBSTANCE: inventions group relates to detection of anomalous behavior when searching the Internet and, in particular, to detection of web hosts with abnormal website visits. The method is executed on a server and comprises the steps of obtaining a web search history for a plurality of users via a communication network based on search queries from a plurality of client devices; forming a web history graph in which each vertex represents a web host from the web search history, with vertices connected to other vertices by edges, each having an edge weight determined based on the number of users who visited both hosts connected by this edge; clustering graph vertices based on edge weights and forming a plurality of vertex clusters; obtaining user activity data corresponding to these vertex clusters and associated with a plurality of users visiting web hosts associated with these vertex clusters; determining, for each vertex cluster, the associated web hosts in that cluster based on user activity data; removal from the graph of each vertex cluster containing web hosts associated based on user activity data; and storing, for each web host associated with the cluster remaining in the graph, an indicator that the web host is associated with abnormal website visits.

EFFECT: improving the reliability of the search engine by increasing the reliability of the results.

21 cl, 10 dwg