Fraud gang identification method based on network flow, controller and medium

The invention relates to a fraud gang identification method based on network flow, a controller and a medium. The method comprises steps of obtaining the network fraud flow of a plurality of to-be-tested accounts, and extracting the network fraud data corresponding to each to-be-tested account from the network fraud flow; sequentially performing association degree calculation on every two to-be-tested accounts in the plurality of to-be-tested accounts based on the network fraud data to obtain a first association degree, and if the first association degree is greater than a first association degree threshold, combining the corresponding to-be-tested accounts into a to-be-identified gang; and performing association degree calculation on the to-be-identified gang and a preset historical existing gang based on the network fraud data to obtain a second association degree, and if the second association degree is greater than a second association degree threshold, combining the to-be-identified gang and the historic