Data stream security dynamic monitoring method based on mobile window

The invention relates to the technical field of information security, in particular to a data stream security dynamic monitoring method based on a mobile window, which comprises the following steps of: 1, processing a data stream, and performing dimension reduction processing on elements in the data stream influencing system security by adopting a principal component analysis method; step 2, identification is carried out, the data stream after dimension reduction processing is identified through a multi-classification Logit model, and a conclusion that the data stream belongs to a classification type corresponding to the maximum probability is given; and step 3, dynamic monitoring: the whole data stream is dynamically monitored by moving a window, and different window widths can identify different feature distributions. According to the method, dimension reduction is carried out through the principal component analysis method, the calculation amount is reduced, regression pre-judgment is carried out on the da