The invention discloses a financial
network security defense method and
system based on multiple Agents and a dynamic
large model. A detection Agent is deployed in an edge layer, financial network node flow data and
system logs are collected in real time,
time sequence features are extracted through a lightweight convolutional network, and a preliminary anomaly
score is generated. And the cloud layer constructs a decision Agent, receives the feature abstract transmitted by the
edge node in an encrypted manner, inputs the feature abstract into a dynamic
large model for multi-
modal feature fusion, and outputs defense action probability distribution. And the intelligence Agent constructs a cross-institution
federated learning network. And constructing a dynamic
game engine, constructing a revenue matrix based on the
attack cost and the defense revenue, solving a Nash equilibrium strategy, and generating an optimal defense
instruction set. And dynamically allocating detection tasks according to the
threat level and the
edge computing power state. According to the method, efficient acquisition and analysis are realized, the abnormal
behavior recognition capability is improved, support is provided for making a defense strategy, the defense strategy is optimized, and the intelligent, automatic and efficient levels of defense are improved.