This invention proposes an intelligent method for detecting abnormal
network behavior, including acquiring target network traffic data, constructing a multi-dimensional
feature fusion model based on an attention mechanism, and building an abnormal behavior classification model based on
deep learning. By automatically allocating attention to different network traffic features through the attention mechanism, it solves the problems of unreasonable feature weight allocation and insufficient
feature fusion in traditional methods, significantly improving the detection capability for low-frequency and covert abnormal behaviors and effectively reducing false positive and false negative rates. The classification model employs a
hybrid CNN and LSTM structure, taking into account both the local spatial and temporal features of network traffic, and can accurately identify various types of abnormal network behaviors such as DDoS attacks, port scanning,
SQL injection, and malicious code propagation, adapting to diverse
attack scenarios with high classification accuracy.