Network security defense method and system and storage medium

Abstract

The invention provides a network security defense method and system and a storage medium, and the method comprises the steps: obtaining garbage collection parameter settings of a log structure file system, including a collection threshold value, a log segment size, a data validity period and a metadata management rule, evaluating the garbage collection efficiency and resource utilization condition of the system under the current settings, and recognizing potential optimization points; according to sensitive data definition and classification rules, adopting a decision tree model to identify and classify sensitive data in the log structure file to obtain data sets of different sensitive levels, and setting different migration frequency thresholds and encryption strengths for the sensitive data of different sensitive levels; a comprehensive system monitoring and log analysis platform is established, garbage collection efficiency, sensitive data processing conditions and system performance indexes are tracked in real time, and garbage collection parameters and a sensitive data processing mechanism are adaptively optimized and dynamically adjusted according to monitoring data and preset rules.

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