The application relates to an abnormal transaction behavior identification method and device, and relates to the technical field of
information security, and solves the problems of high
delay, large
energy consumption and cross-institution data island of a traditional pure
software scheme. The method comprises the following steps: converting transaction relationship data into a graph structure, wherein the nodes of the graph structure represent transaction parties, and the edges of the graph structure represent transactions; inputting an
adjacency matrix of the graph structure into a spin-
orbit torque magnetic
random access memory, wherein the spin-
orbit torque magnetic
random access memory stores the weights of a graph neural
network model; reading
simulation convolution results generated by the spin-
orbit torque magnetic
random access memory from the
adjacency matrix to obtain graph neural network features extracted from the graph structure by the graph neural
network model; and inputting the graph neural network features into an abnormal transaction behavior evaluation model to obtain an
evaluation result.